1. Assignment:
1­­>L6.1, pg. 336­337, #16 ­ 24 (evens) & #28 ­ 40 (evens) ­ Due Monday (1/9)
2­­>Chapter 5 Test signed for extra credit??
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2. Lesson 6.1 WarmUp:
Solve each inequality.
1) ­2x + 4 > ­6
2) 5n ­ 3(n ­ 6) > 0
3) 23 ­ t < 2(t ­ 9) ­ 3(t + 2)
Solve each compound inequality. Then graph the solution on a number line.
4) m + 3 > 5 and m + 3 < 7
5) ­n > 2 or 2n ­ 3 > 5
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3. Lesson 6.1:
*FYI...the solution for a system of equations is the ordered pair that is a
solution for all of the equations....
...and..system of equations can have one solution, an infinite number of
solutions, or no solutions....
**IF the system has one solution, it is called consistent. [the graphs
intersect at one point or are the same line]
***IF the consistent system has EXACTLY one solution, it is called
independent. [the graphs intersect at exactly one point]
****IF the consistent system has an INFINITE number of solutions, it is
called dependent. [the graphs are the same line(s)]
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4. *****IF the system has no solution, it is called inconsistent. [the
graphs are parallel]
­­>Look at the Concept Summary chart on page 333 in your
book!
ONE way to solve a system of linear
equation is to GRAPH them!
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5. Lesson 6.1 examples:
Graph each system and determine the number of solutions it has. If it
has one solution, name it.
A) y = 6
y = 3x + 4 Y
X
5

6. B) y = ­2x + 3 Y
y = ­2x ­ 5
X
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7. C) x + y = 4 Y
3x + 3y = 12
X
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8. D) 2x ­ y = ­1
4x ­ 2y = 6
Y
X
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9. E) x + 2y = 3 Y
x = 5
X
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