1. Lesson 2­5.notebook September 12, 2013
Assignment:
1­­>L2.5, pg. 105­106, #2­36 [evens...skip #10] ­ Due Tomorrow (9/13)
2­­>Chapter 2 Test ­ Friday (9/20)

2. Lesson 2­5.notebook September 12, 2013
Lesson 2.5 WarmUp:
Solve each equation. Show all work for full credit.
1) 1.3c = 3.3c + 2.8
2) 2(4r + 6) = 2/3(12r + 18)
3) 12 ­ 4/5(x + 15) = 4
4) 7 ­ 3r = r ­ 4(2 + r)
5) 2/5m = 1/3(2m ­ 12)

3. Lesson 2­5.notebook September 12, 2013
Lesson 2.5:
*To evaluate absolute value expressions...plug in the value(s) for the variable
(s) and simplify.
*To solve absolute value equations...we must consider both possible "cases"...
­­>|x| = 5 the solution is: 5 and ­5
*So... For any real numbers a and b, if |a| = b, then a = b or a = ­b
And.... |a + b| = c, then a + b = c or a + b = ­c
And...the solutions can be graphed on a number line.

4. Lesson 2­5.notebook September 12, 2013
Lesson 2.5 examples:
Evaluate each expression:
A) |3 ­ h| + 13, if h = ­5
B) |f + g| ­ h, if f = 3, g = ­4 and h = 5
C) ­a + |2x ­ a|, if a = ­2 and x = 2.1

5. Lesson 2­5.notebook September 12, 2013
Solve each equation. Graph the solution set.
D) |y + 2| = 4
E) |3n ­ 4| = ­1

6. Lesson 2­5.notebook September 12, 2013
F) 2|y| ­ 3 = 8
G) 4 ­ 3|x| = 10

7. Lesson 2­5.notebook September 12, 2013
Write an equation involving absolute value for each graph.
H)
I)
10 2 3 4 5 6 7 8 9 10­1­2­3­4­5­6­7­8­9­10
10 2 3 4 5 6 7 8 9 10­1­2­3­4­5­6­7­8­9­10