Page 172 - Math Course 1 (Book 1)

Inequalities: Multiplication and Division

Multiply or Divide by a Negative Number
x
Solve > 6 and check your solution. Then Solve –5x ≤ –40 and check your solution. Then
-3 graph your solution on a number line.
graph your solution on a number line.

A. x < 18 A. x ≥ –45
15 16 17 18 19 20 -47 -46 -45 -44 -43 -42

B. x < –2 B. x ≥ –8
-5 -4 -3 -2 -1 0 -10 -9 -8 -7 -6 -5

C. x < –18 C. x ≤ 8
-20 -19 -18 -17 -16 -15 5 6 7 8 9 10

D. x > –18 D. x ≥ 8
-20 -19 -18 -17 -16 -15 5 6 7 8 9 10

Answer Answer

Skill Practice!

Solve each inequality and check your solution. Then graph the solution on a number line.

1. -8x > 16 2. 7y < - 35

-4 -3 -2 -1 0
-7 -6 -5 -4 -3

3. 12 a > - 24 4. -12 < 4a

-4 -3 -2 -1 0 -5 -4 -3 -2 -1

5. -6z < -18 6. 14 > -2k

1 2 3 4 5 -9 -8 -7 -6 -5

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