8th alg - lesson 5-6--dec 12
TRANSCRIPT
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Assignment:
1>L5.6, pg. 318, #26 (evens) & #12 22 (evens) Due Wed. (12/14)2>Checkpoint 54 thru 56 Due Wednesday (12/14) 3>Chapter 5 Test Thursday (12/15)
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Lesson 5.6 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.4) m + 3 > 5 and m + 3 < 7
5) n > 2 or 2n 3 > 5
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Lesson 5.6:
*linear inequality an inequality with 2 variables (x and y) that include a "halfplane" of the coordinate graph.
*Steps for graphing a linear inequality:Graph the inequality (as if it were an equation)
[Use a dashed line for < or > and a solid line for < or >.]Pick a point and "test" it in the inequality."IF the point works...shade the halfplane containing the point
and "IF" the point doesn't work...shade the other halfplane.
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Lesson 5.6 examples:Graph the following.A) y > 1/2x + 3
X
Y
5
B) 3x y < 2
X
Y
6
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YC) x + 5y < 10
7
D) 2x + 3y > 18
X
Y
8
E) 3y > 18
X
Y