Solving Inequalities by Adding or Subtracting

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Warm Up Lesson Presentation Lesson Quiz

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Solving Inequalities by Adding or Subtracting

Warm Up

Graph each inequality. Write an inequality for each situation.

1. The temperature must be at least ?10?F.

x ?10

?10

0

10

2. The temperature must be no more than 90?F.

x 90

?90

0

90

Solve each equation.

3. x ? 4 = 10 14

4. 15 = x + 1.1 13.9

Holt McDougal Algebra 1

Solving Inequalities by Adding or Subtracting

Objectives

Solve one-step inequalities by using addition. Solve one-step inequalities by using subtraction.

Holt McDougal Algebra 1

Solving Inequalities by Adding or Subtracting

Solving one-step inequalities is much like solving one-step equations. To solve an inequality, you need to isolate the variable using the properties of inequality and inverse operations.

Holt McDougal Algebra 1

Solving Inequalities by Adding or Subtracting

Holt McDougal Algebra 1

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