5.2 – solving inequalities by multiplication & division

5.2 – Solving Inequalities by Multiplication & Division

*Just like solving equations*

*Just like solving equations*Example 1

*Just like solving equations*Example 1 - Solve 4x > 20 and graph on a number

line.

*Just like solving equations*Example 1 - Solve 4x > 20 and graph on a number

line. 4x > 20

*Just like solving equations*Example 1 - Solve 4x > 20 and graph on a number

line. 4x > 20 4 4

*Just like solving equations*Example 1 - Solve 4x > 20 and graph on a number

line. 4x > 20 4 4 x > 5

*Just like solving equations*Example 1 - Solve 4x > 20 and graph on a number

line. 4x > 20 4 4 x > 5

0 5

*Just like solving equations*Example 1 - Solve 4x > 20 and graph on a number

line. 4x > 20 4 4 x > 5

0 5

*Just like solving equations*Example 1 - Solve 4x > 20 and graph on a number

line. 4x > 20 4 4 x > 5

0 5

*Just like solving equations*Example 2 - Solve -⅔x < 6 and graph on a number

line.

*Just like solving equations*Example 2 - Solve -⅔x < 6 and graph on a number

line. -⅔x < 6

*Just like solving equations*Example 2 - Solve -⅔x < 6 and graph on a number

line. -⅔x < 6 -2x < 6 3

*Just like solving equations*Example 2 - Solve -⅔x < 6 and graph on a number

line. -⅔x < 6 3 ∙ -2x < 6 3∙ 3

*Just like solving equations*Example 2 - Solve -⅔x < 6 and graph on a number

line. -⅔x < 6 3 ∙ -2x < 6 3∙ 3

*Just like solving equations*Example 2 - Solve -⅔x < 6 and graph on a number

line. -⅔x < 6 3 ∙ -2x < 6 3∙ 3 -2x < 18

*Just like solving equations*Example 2 - Solve -⅔x < 6 and graph on a number

line. -⅔x < 6 3 ∙ -2x < 6 3∙ 3 -2x < 18 -2 -2

*Just like solving equations*Example 2 - Solve -⅔x < 6 and graph on a number

line. -⅔x < 6 3 ∙ -2x < 6 3∙ 3 -2x < 18 -2 -2

x > -9

*Just like solving equations*Example 2 - Solve -⅔x < 6 and graph on a number

line. -⅔x < 6 3 ∙ -2x < 6 3∙ 3 -2x < 18 -2 -2

x > -9

-9 0

*Just like solving equations*Example 2 - Solve -⅔x < 6 and graph on a number

line. -⅔x < 6 3 ∙ -2x < 6 3∙ 3 -2x < 18 -2 -2

x > -9

-9 0

*Just like solving equations*Example 2 - Solve -⅔x < 6 and graph on a number

line. -⅔x < 6 3 ∙ -2x < 6 3∙ 3 -2x < 18 -2 -2

x > -9

-9 0