# 4.3 The Multiplication Property of Inequality - PowerPoint PPT Presentation

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## 4.3 The Multiplication Property of Inequality

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### 4.3 The Multiplication Property of Inequality Goal: To solve inequalities using the multiplication property Multiplication Property of Inequalities For all rational ... – PowerPoint PPT presentation

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Title: 4.3 The Multiplication Property of Inequality

1
4.3 The Multiplication Property of Inequality
• Goal To solve inequalities using the
multiplication property

2
Multiplication Property of Inequalities
• For all rational numbers a, b, and c
• When c is positive,
• if a gt b, then a c gt b c
• When c is negative,
• if a gt b, then a c lt b c

3
If you multiply or divide an inequality by a
4
(No Transcript)
5
Check It Out!
Solve the inequality and graph the solutions.
10 x
divide both sides by 1 to make x positive.
Change ? to ?.
1(10) 1(x)
10 x
6
Check It Out!
Solve the inequality and graph the solutions.
10 x
7
Solve for y, then graph the solution.
-3y ? 12
-3
-3
y ? -4
?
8
Solve for y, then graph the solution.
-4y ? 16
y ? -4
9
Solve for y, then graph the solution.
3y ? -15
y ? -5
10
Solve for y, then graph the solution.
-5y ? -20
y ? 4
11
Solve the inequality and graph the solutions.
24 ? x
(or x ? 24)
12
Assignment Pg 182 (2-42) even