SlideShare une entreprise Scribd logo
1  sur  51
Best Morning!
S M I L E
LAND LABOR
ENTREPRENEURSHIP
CAPITAL PRODUCTION
It is the time and effort exerted
by man which includes physical
and mental ability of a person
who work in the sectors of
agriculture, industry and service.
It is the time and effort exerted
by man which includes physical
and mental ability of a person
who work in the sectors of
agriculture, industry and service.
LABOR
Basic Concepts of Demand
It is considered as man-made
products that are used to produce
goods and services which
includes machineries, factories
and transportations.
It is considered as man-made
products that are used to produce
goods and services which
includes machineries, factories
and transportations.
CAPITAL
Basic Concepts of Demand
It is an individual that
oversees, plans and
takes risk in a business.
It is an individual that
oversees, plans and
takes risk in a business.
ENTREPRENEURSHIP
Basic Concepts of Demand
It refers to the natural resources
which encompasses all original
and nonrenewable natural
resources.
It refers to the natural resources
which encompasses all original
and nonrenewable natural
resources.
LAND
Basic Concepts of Demand
It refers to creating
products and services in
order to meet society’s
needs.
It refers to creating
products and services in
order to meet society’s
needs.
PRODUCTION
DEMAND?
Demand- it is defined as
the quantity of goods and
services that consumers are
willing to buy at a given price
and time.
The consumer side of the market is
DEMAND
The law of demand describes
the general behavior of
consumers.
Consumers tend to buy more if
the price of the product is low
and less if the price is high.
Law of Demand
Individual Demand
-the demand for a product by a
particular consumer or buyer.
Illustrating the Law of demand
Market Demand
-the demand for the same product
by all the consumers
Individual Demand
Schedule and Curve
Illustrating the Law of demand
• Individual Demand Schedule
Illustrating the Law of demand
refers to a tabular representation
that shows the quantity demand a
consumer is willing to buy given
alternative prices.
Athena’s
Individual
Demand
Schedule for
Spiral
Notebooks
Individual Demand Schedule
Price per Unit Quantity Demanded
(in pieces)
₱5.00 18
₱10.00 15
₱15.00 12
₱20.00 9
₱25.00 6
₱30.00 3
₱35.00 0
• Individual Demand Curve
Illustrating the Law of demand
is a graphical representation of
a demand schedule.
Individual Demand Curve
Market Demand
Schedule and Curve
Illustrating the Law of demand
Market Demand
Schedule for
Spiral Notebooks
(Athena + other
students)
Market Demand Schedule
Price per Unit Quantity Demanded
(in pieces)
₱5.00 1,300
₱10.00 1,000
₱15.00 850
₱20.00 580
₱25.00 300
₱30.00 200
₱35.00
₱40.00
100
10
Market Demand
Curve for Spiral
Notebooks
(Athena + other
students)
Market Demand Curve
Why consumers
prefer a Low
Price?
UTILITY THEORY
• Utility theory suggests that the
price of a product must be
commensurate to its usefulness.
The more useful the product is, the
higher price should be.
UTILITY THEORY
• Utility theory uses util as the
hypothetical unit for
measuring consumer
satisfaction.
UTILITY THEORY
UTILITY THEORY
UTILITY THEORY
1. Change in
Quantity
Demanded
2. Change in
Demand
SHIFTS IN DEMAND
1. Change in Quantity Demanded
SHIFTS IN DEMAND
Occurs when the demand for a
commodity changes because
the commodity’s price
changes. This creates a shift
along the demand curve.
2. Change in Demand
SHIFTS IN DEMAND
Happens when the demand for
a product at a particular time
increases or decreases even
though the price is constant.
This creates a shift of the
demand curve.
1. Income
FACTORS AFFECTING DEMAND
The increase in income will
most likely cause the demand
curve to shift to the right.
1. Income
FACTORS AFFECTING DEMAND
The decrease in income will
most likely to reduce its
volume of consumption, this
will cause the demand curve
to shift to the left.
2. Change in Demand
SHIFTS IN DEMAND
Happens when the demand for
a product at a particular time
increases or decreases even
though the price is constant.
This creates a shift of the
demand curve.
2. Change in Demand
SHIFTS IN DEMAND
Happens when the demand for
a product at a particular time
increases or decreases even
though the price is constant.
This creates a shift of the
demand curve.
2. Change in Demand
SHIFTS IN DEMAND
Happens when the demand for
a product at a particular time
increases or decreases even
though the price is constant.
This creates a shift of the
demand curve.
2. Change in Demand
SHIFTS IN DEMAND
Happens when the demand for
a product at a particular time
increases or decreases even
though the price is constant.
This creates a shift of the
demand curve.
1. Change in
Quantity
Demanded
2. Change in
Demand
SHIFTS IN DEMAND
1. Movement in the demand curve
2 movements in the demand curve
when the commodity
experience change in both the
quantity demanded and price,
causing the curve to move in
specific direction.
2. Shift in the demand curve
2 movements in the demand curve
When the price of the
commodity remains constant
but there is a change in
quantity demanded due to
some other factors causing the
curve to shift in particular side.
“ILLUSTRATE IT OUT”
Assuming that 300 is the quantity of the
product (Lanzones) that a consumer is willing
to buy.
Find the:
-Demand function, Demand schedule,
Demand curve, Market demand at your own
price.
Given the formula of Qd=300-5P
LUCKY ONE
QUIZ (10 pts)
Direction: Read the statement in each number and find the components being define inside
the box. Write your answer in a sheet of paper. (2 minutes)
_________1. It refers to the total quantity of a product or service demanded by all the
consumers in the market. This can be seen in the market.
_________2. Is a graphical representation of the inverse relationship between price and
quantity demand. We can use the demand schedule to plot the demand curve.
_________3. Is defined as the quantity of a product or service that a consumer is willing to
buy given alternative prices at a specific period in time.
_________4. States that at ceteris paribus, while price is decreasing the quantity demand is
increasing and while the price is increasing the quantity demand is decreasing.
_________5. Is a mathematical equation that has two variables, the dependent and
independent?
A. Demand B. Demand Schedule
C. Market Demand D. Law of Demand
E. Demand Function F. Demand Curve
ASSIGNMENT
Direction:
Gather news articles on the prices of basic
commodities including rice, sugar and chicken.
Make a class presentation on what is
happening to their prices using demand and
supply analysis.
THANK YOU
FOR LISTENING!

Contenu connexe

Similaire à SS 9 L6.pptx

Supply and Demand in grade12 student PPT.pdf
Supply and Demand in grade12 student PPT.pdfSupply and Demand in grade12 student PPT.pdf
Supply and Demand in grade12 student PPT.pdf
CamiloCantilaSacroJr
 
Chapter 2 Demand
Chapter 2    DemandChapter 2    Demand
Chapter 2 Demand
Ejarn Jijan
 

Similaire à SS 9 L6.pptx (20)

SupplyandDemand.ppt
SupplyandDemand.pptSupplyandDemand.ppt
SupplyandDemand.ppt
 
Supply and Demand in grade12 student PPT.pdf
Supply and Demand in grade12 student PPT.pdfSupply and Demand in grade12 student PPT.pdf
Supply and Demand in grade12 student PPT.pdf
 
Mba1014 individual and market demand 080513
Mba1014 individual and market demand 080513Mba1014 individual and market demand 080513
Mba1014 individual and market demand 080513
 
Basic of Supply and Demand - Economic
Basic of Supply and Demand - EconomicBasic of Supply and Demand - Economic
Basic of Supply and Demand - Economic
 
Chapter 3 - An Introduction to Demand and Supply.ppt
Chapter 3 - An Introduction to Demand and Supply.pptChapter 3 - An Introduction to Demand and Supply.ppt
Chapter 3 - An Introduction to Demand and Supply.ppt
 
Microeconomics - Demand Theory for International.pptx
Microeconomics - Demand Theory for International.pptxMicroeconomics - Demand Theory for International.pptx
Microeconomics - Demand Theory for International.pptx
 
Supply And Demand
Supply And DemandSupply And Demand
Supply And Demand
 
Law of demand 11th class.pptx
Law of demand 11th class.pptxLaw of demand 11th class.pptx
Law of demand 11th class.pptx
 
Unit 3
Unit 3Unit 3
Unit 3
 
L of demand converted
L of demand convertedL of demand converted
L of demand converted
 
Demand analysis
Demand analysisDemand analysis
Demand analysis
 
Law of demand
Law of demand Law of demand
Law of demand
 
Mcconnell brief2e
Mcconnell brief2e Mcconnell brief2e
Mcconnell brief2e
 
Demand.pdf
Demand.pdfDemand.pdf
Demand.pdf
 
Unit 2 demand
Unit 2 demandUnit 2 demand
Unit 2 demand
 
Media economics
Media economicsMedia economics
Media economics
 
6. demand pgp2
6. demand pgp26. demand pgp2
6. demand pgp2
 
6. demand pgp2
6. demand pgp26. demand pgp2
6. demand pgp2
 
Unit 1 modified
Unit 1 modifiedUnit 1 modified
Unit 1 modified
 
Chapter 2 Demand
Chapter 2    DemandChapter 2    Demand
Chapter 2 Demand
 

Plus de carissayap3

Plus de carissayap3 (11)

First Quarterly Test in Grade 10.docx
First Quarterly Test in Grade 10.docxFirst Quarterly Test in Grade 10.docx
First Quarterly Test in Grade 10.docx
 
SS 9 L6.pptx
SS 9 L6.pptxSS 9 L6.pptx
SS 9 L6.pptx
 
First Quarter TOS Grade 9 and 10.docx
First Quarter TOS Grade 9 and 10.docxFirst Quarter TOS Grade 9 and 10.docx
First Quarter TOS Grade 9 and 10.docx
 
SS 9 Lesson 6.docx
SS 9 Lesson 6.docxSS 9 Lesson 6.docx
SS 9 Lesson 6.docx
 
MECHANICS.docx
MECHANICS.docxMECHANICS.docx
MECHANICS.docx
 
Score Sheets.docx
Score Sheets.docxScore Sheets.docx
Score Sheets.docx
 
QUIZ in Grade 10.pptx
QUIZ in Grade 10.pptxQUIZ in Grade 10.pptx
QUIZ in Grade 10.pptx
 
Indicators.pptx
Indicators.pptxIndicators.pptx
Indicators.pptx
 
Indicators.pptx
Indicators.pptxIndicators.pptx
Indicators.pptx
 
Brown And Beige Minimalist Vintage Scrapbook Self-Introduction Presentation ....
Brown And Beige Minimalist Vintage Scrapbook Self-Introduction Presentation ....Brown And Beige Minimalist Vintage Scrapbook Self-Introduction Presentation ....
Brown And Beige Minimalist Vintage Scrapbook Self-Introduction Presentation ....
 
PARENT'S MEETING.pptx
PARENT'S MEETING.pptxPARENT'S MEETING.pptx
PARENT'S MEETING.pptx
 

Dernier

Challenges and Opportunities: A Qualitative Study on Tax Compliance in Pakistan
Challenges and Opportunities: A Qualitative Study on Tax Compliance in PakistanChallenges and Opportunities: A Qualitative Study on Tax Compliance in Pakistan
Challenges and Opportunities: A Qualitative Study on Tax Compliance in Pakistan
vineshkumarsajnani12
 
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwait
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai KuwaitThe Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwait
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwait
daisycvs
 
Jual Obat Aborsi ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan Cytotec
Jual Obat Aborsi ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan CytotecJual Obat Aborsi ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan Cytotec
Jual Obat Aborsi ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan Cytotec
ZurliaSoop
 

Dernier (20)

joint cost.pptx COST ACCOUNTING Sixteenth Edition ...
joint cost.pptx  COST ACCOUNTING  Sixteenth Edition                          ...joint cost.pptx  COST ACCOUNTING  Sixteenth Edition                          ...
joint cost.pptx COST ACCOUNTING Sixteenth Edition ...
 
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60% in 6 Months
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60%  in 6 MonthsSEO Case Study: How I Increased SEO Traffic & Ranking by 50-60%  in 6 Months
SEO Case Study: How I Increased SEO Traffic & Ranking by 50-60% in 6 Months
 
CROSS CULTURAL NEGOTIATION BY PANMISEM NS
CROSS CULTURAL NEGOTIATION BY PANMISEM NSCROSS CULTURAL NEGOTIATION BY PANMISEM NS
CROSS CULTURAL NEGOTIATION BY PANMISEM NS
 
Arti Languages Pre Seed Teaser Deck 2024.pdf
Arti Languages Pre Seed Teaser Deck 2024.pdfArti Languages Pre Seed Teaser Deck 2024.pdf
Arti Languages Pre Seed Teaser Deck 2024.pdf
 
HomeRoots Pitch Deck | Investor Insights | April 2024
HomeRoots Pitch Deck | Investor Insights | April 2024HomeRoots Pitch Deck | Investor Insights | April 2024
HomeRoots Pitch Deck | Investor Insights | April 2024
 
Challenges and Opportunities: A Qualitative Study on Tax Compliance in Pakistan
Challenges and Opportunities: A Qualitative Study on Tax Compliance in PakistanChallenges and Opportunities: A Qualitative Study on Tax Compliance in Pakistan
Challenges and Opportunities: A Qualitative Study on Tax Compliance in Pakistan
 
Unveiling Falcon Invoice Discounting: Leading the Way as India's Premier Bill...
Unveiling Falcon Invoice Discounting: Leading the Way as India's Premier Bill...Unveiling Falcon Invoice Discounting: Leading the Way as India's Premier Bill...
Unveiling Falcon Invoice Discounting: Leading the Way as India's Premier Bill...
 
Berhampur CALL GIRL❤7091819311❤CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDING
Berhampur CALL GIRL❤7091819311❤CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDINGBerhampur CALL GIRL❤7091819311❤CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDING
Berhampur CALL GIRL❤7091819311❤CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDING
 
Falcon Invoice Discounting: Unlock Your Business Potential
Falcon Invoice Discounting: Unlock Your Business PotentialFalcon Invoice Discounting: Unlock Your Business Potential
Falcon Invoice Discounting: Unlock Your Business Potential
 
PARK STREET 💋 Call Girl 9827461493 Call Girls in Escort service book now
PARK STREET 💋 Call Girl 9827461493 Call Girls in  Escort service book nowPARK STREET 💋 Call Girl 9827461493 Call Girls in  Escort service book now
PARK STREET 💋 Call Girl 9827461493 Call Girls in Escort service book now
 
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwait
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai KuwaitThe Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwait
The Abortion pills for sale in Qatar@Doha [+27737758557] []Deira Dubai Kuwait
 
Horngren’s Cost Accounting A Managerial Emphasis, Canadian 9th edition soluti...
Horngren’s Cost Accounting A Managerial Emphasis, Canadian 9th edition soluti...Horngren’s Cost Accounting A Managerial Emphasis, Canadian 9th edition soluti...
Horngren’s Cost Accounting A Managerial Emphasis, Canadian 9th edition soluti...
 
WheelTug Short Pitch Deck 2024 | Byond Insights
WheelTug Short Pitch Deck 2024 | Byond InsightsWheelTug Short Pitch Deck 2024 | Byond Insights
WheelTug Short Pitch Deck 2024 | Byond Insights
 
Call 7737669865 Vadodara Call Girls Service at your Door Step Available All Time
Call 7737669865 Vadodara Call Girls Service at your Door Step Available All TimeCall 7737669865 Vadodara Call Girls Service at your Door Step Available All Time
Call 7737669865 Vadodara Call Girls Service at your Door Step Available All Time
 
Lundin Gold - Q1 2024 Conference Call Presentation (Revised)
Lundin Gold - Q1 2024 Conference Call Presentation (Revised)Lundin Gold - Q1 2024 Conference Call Presentation (Revised)
Lundin Gold - Q1 2024 Conference Call Presentation (Revised)
 
Paradip CALL GIRL❤7091819311❤CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDING
Paradip CALL GIRL❤7091819311❤CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDINGParadip CALL GIRL❤7091819311❤CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDING
Paradip CALL GIRL❤7091819311❤CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDING
 
Jual Obat Aborsi ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan Cytotec
Jual Obat Aborsi ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan CytotecJual Obat Aborsi ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan Cytotec
Jual Obat Aborsi ( Asli No.1 ) 085657271886 Obat Penggugur Kandungan Cytotec
 
Berhampur 70918*19311 CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDING
Berhampur 70918*19311 CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDINGBerhampur 70918*19311 CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDING
Berhampur 70918*19311 CALL GIRLS IN ESCORT SERVICE WE ARE PROVIDING
 
Chennai Call Gril 80022//12248 Only For Sex And High Profile Best Gril Sex Av...
Chennai Call Gril 80022//12248 Only For Sex And High Profile Best Gril Sex Av...Chennai Call Gril 80022//12248 Only For Sex And High Profile Best Gril Sex Av...
Chennai Call Gril 80022//12248 Only For Sex And High Profile Best Gril Sex Av...
 
Buy gmail accounts.pdf buy Old Gmail Accounts
Buy gmail accounts.pdf buy Old Gmail AccountsBuy gmail accounts.pdf buy Old Gmail Accounts
Buy gmail accounts.pdf buy Old Gmail Accounts
 

SS 9 L6.pptx

  • 3. It is the time and effort exerted by man which includes physical and mental ability of a person who work in the sectors of agriculture, industry and service.
  • 4. It is the time and effort exerted by man which includes physical and mental ability of a person who work in the sectors of agriculture, industry and service. LABOR
  • 5. Basic Concepts of Demand It is considered as man-made products that are used to produce goods and services which includes machineries, factories and transportations.
  • 6. It is considered as man-made products that are used to produce goods and services which includes machineries, factories and transportations. CAPITAL
  • 7. Basic Concepts of Demand It is an individual that oversees, plans and takes risk in a business.
  • 8. It is an individual that oversees, plans and takes risk in a business. ENTREPRENEURSHIP
  • 9. Basic Concepts of Demand It refers to the natural resources which encompasses all original and nonrenewable natural resources.
  • 10. It refers to the natural resources which encompasses all original and nonrenewable natural resources. LAND
  • 11. Basic Concepts of Demand It refers to creating products and services in order to meet society’s needs.
  • 12. It refers to creating products and services in order to meet society’s needs. PRODUCTION
  • 13.
  • 15. Demand- it is defined as the quantity of goods and services that consumers are willing to buy at a given price and time. The consumer side of the market is DEMAND
  • 16. The law of demand describes the general behavior of consumers. Consumers tend to buy more if the price of the product is low and less if the price is high. Law of Demand
  • 17. Individual Demand -the demand for a product by a particular consumer or buyer. Illustrating the Law of demand Market Demand -the demand for the same product by all the consumers
  • 18. Individual Demand Schedule and Curve Illustrating the Law of demand
  • 19. • Individual Demand Schedule Illustrating the Law of demand refers to a tabular representation that shows the quantity demand a consumer is willing to buy given alternative prices.
  • 20. Athena’s Individual Demand Schedule for Spiral Notebooks Individual Demand Schedule Price per Unit Quantity Demanded (in pieces) ₱5.00 18 ₱10.00 15 ₱15.00 12 ₱20.00 9 ₱25.00 6 ₱30.00 3 ₱35.00 0
  • 21. • Individual Demand Curve Illustrating the Law of demand is a graphical representation of a demand schedule.
  • 23. Market Demand Schedule and Curve Illustrating the Law of demand
  • 24. Market Demand Schedule for Spiral Notebooks (Athena + other students) Market Demand Schedule Price per Unit Quantity Demanded (in pieces) ₱5.00 1,300 ₱10.00 1,000 ₱15.00 850 ₱20.00 580 ₱25.00 300 ₱30.00 200 ₱35.00 ₱40.00 100 10
  • 25. Market Demand Curve for Spiral Notebooks (Athena + other students) Market Demand Curve
  • 27. UTILITY THEORY • Utility theory suggests that the price of a product must be commensurate to its usefulness. The more useful the product is, the higher price should be.
  • 28. UTILITY THEORY • Utility theory uses util as the hypothetical unit for measuring consumer satisfaction.
  • 32. 1. Change in Quantity Demanded 2. Change in Demand SHIFTS IN DEMAND
  • 33. 1. Change in Quantity Demanded SHIFTS IN DEMAND Occurs when the demand for a commodity changes because the commodity’s price changes. This creates a shift along the demand curve.
  • 34. 2. Change in Demand SHIFTS IN DEMAND Happens when the demand for a product at a particular time increases or decreases even though the price is constant. This creates a shift of the demand curve.
  • 35. 1. Income FACTORS AFFECTING DEMAND The increase in income will most likely cause the demand curve to shift to the right.
  • 36. 1. Income FACTORS AFFECTING DEMAND The decrease in income will most likely to reduce its volume of consumption, this will cause the demand curve to shift to the left.
  • 37. 2. Change in Demand SHIFTS IN DEMAND Happens when the demand for a product at a particular time increases or decreases even though the price is constant. This creates a shift of the demand curve.
  • 38. 2. Change in Demand SHIFTS IN DEMAND Happens when the demand for a product at a particular time increases or decreases even though the price is constant. This creates a shift of the demand curve.
  • 39. 2. Change in Demand SHIFTS IN DEMAND Happens when the demand for a product at a particular time increases or decreases even though the price is constant. This creates a shift of the demand curve.
  • 40. 2. Change in Demand SHIFTS IN DEMAND Happens when the demand for a product at a particular time increases or decreases even though the price is constant. This creates a shift of the demand curve.
  • 41. 1. Change in Quantity Demanded 2. Change in Demand SHIFTS IN DEMAND
  • 42. 1. Movement in the demand curve 2 movements in the demand curve when the commodity experience change in both the quantity demanded and price, causing the curve to move in specific direction.
  • 43.
  • 44. 2. Shift in the demand curve 2 movements in the demand curve When the price of the commodity remains constant but there is a change in quantity demanded due to some other factors causing the curve to shift in particular side.
  • 45.
  • 46. “ILLUSTRATE IT OUT” Assuming that 300 is the quantity of the product (Lanzones) that a consumer is willing to buy. Find the: -Demand function, Demand schedule, Demand curve, Market demand at your own price. Given the formula of Qd=300-5P
  • 47.
  • 49. QUIZ (10 pts) Direction: Read the statement in each number and find the components being define inside the box. Write your answer in a sheet of paper. (2 minutes) _________1. It refers to the total quantity of a product or service demanded by all the consumers in the market. This can be seen in the market. _________2. Is a graphical representation of the inverse relationship between price and quantity demand. We can use the demand schedule to plot the demand curve. _________3. Is defined as the quantity of a product or service that a consumer is willing to buy given alternative prices at a specific period in time. _________4. States that at ceteris paribus, while price is decreasing the quantity demand is increasing and while the price is increasing the quantity demand is decreasing. _________5. Is a mathematical equation that has two variables, the dependent and independent? A. Demand B. Demand Schedule C. Market Demand D. Law of Demand E. Demand Function F. Demand Curve
  • 50. ASSIGNMENT Direction: Gather news articles on the prices of basic commodities including rice, sugar and chicken. Make a class presentation on what is happening to their prices using demand and supply analysis.