4.2 Solving Inequalities Using Addition and Subtraction.

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Presentation transcript:

4.2 Solving Inequalities Using Addition and Subtraction

Addition Property of Inequalities If a < b, then a + c < b + c The same is true for >, , and 

Subtraction Property of Inequalities If a < b, then a - c < b - c The same is true for >, , and 

Ex 1: Solve for “x”and graph: x - 3 > 4 +3 X >

You try on your own: Solve and Graph y - 6> -7 Answer: y > - 1

Ex 2: Solve:

You try on your own Solve and Graph

Ex 3:Solve and Graph -9.1 < d - 6.3

You try on your own Solve and Graph

Ex 4: The hole for a birdfeeder post is 3 feet deep. The top of the post needs to be at least 5 feet above the ground. Write and solve an inequality that represent the required length of the post.

Assignment: Page (4-22) even