Lesson 7-4 Pages 345-349 Solving Inequalities by Adding or Subtracting PA Lesson Check 7-3

Lesson 7-4 Pages 345-349

Solving Inequalities by Adding or Subtracting

PA Lesson Check 7-3

What you will learn!How to solve inequalities by using the Addition and Subtraction Properties of Inequality.

What you really need to know!

Use the Addition and Subtraction Properties of Inequalities. When you add or subtract a number from each side of an inequality, the inequality remains true.

Example 1: Solve:

y + 5 > 11

y > 6− 5 − 5

Example 2: Solve:

-21 ≥ d – 8

-13 ≥ d

d ≤ -13

Example 3: Solve and graph.

52

11 h

2

16h

8 96 74 5 1110

Example 4:

Kim has $12 to take to the bowling alley. If the shoe rental costs $3.75, what is the most she can spend on games and snacks?

g + 3.75 ≤ 12

Example 4:

g + 3.75 ≤ 12g ≤ 8.25

Kim can spend at most $8.25 on games and snacks.

Page 347

Guided Practice

#’s 4-12

Pages 345-347 with someone at home and

study examples!

Read:

Homework: Pages 348-349

#’s 14-46 even

#’s 49-70 all

PA Lesson Check 7-4

Page

740

Lesson 7-4

PA Lesson Check 7-4

Prepare for Mid-Test!

Pages 360-361

#’s 11-31Odd Answers in Back of Book!