Solving Inequalities by 2 2 Adding or Subtracting

Solving Inequalities by 2 -2 Adding or Subtracting Warm Up Graph each inequality. Write an inequality for each situation. 1. The temperature must be at least – 10°F. – 10 10 0 2. The temperature must be no more than 90°F. – 90 Solve each equation. 3. x – 4 = 10 4. 15 = x + 1. 1 Holt Mc. Dougal Algebra 1 0 90

Solving Inequalities by 2 -2 Adding or Subtracting Objectives Solve one-step inequalities by using ________________. Holt Mc. Dougal Algebra 1

Solving Inequalities by 2 -2 Adding or Subtracting Holt Mc. Dougal Algebra 1

Solving Inequalities by 2 -2 Adding or Subtracting Example 1 A: Using Addition and Subtraction to Solve Inequalities Solve the inequality and graph the solutions. x + 12 < 20 – 10 – 8 – 6 – 4 – 2 0 Holt Mc. Dougal Algebra 1 2 4 6 8 10

Solving Inequalities by 2 -2 Adding or Subtracting Example 1 A: Using Addition and Subtraction to Solve Inequalities Solve the inequality and graph the solutions. x + 8 < 10 – 8 – 6 – 4 – 2 0 Holt Mc. Dougal Algebra 1 2 4 6 8 10

Solving Inequalities by 2 -2 Adding or Subtracting Example 1 B: Using Addition and Subtraction to Solve Inequalities Solve the inequality and graph the solutions. d – 5 > – 7 – 10 – 8 – 6 – 4 – 2 0 Holt Mc. Dougal Algebra 1 2 4 6 8 10

Solving Inequalities by 2 -2 Adding or Subtracting Example 1 B: Using Addition and Subtraction to Solve Inequalities Solve the inequality and graph the solutions. d – 6 > -2 – 10 – 8 – 6 – 4 – 2 0 Holt Mc. Dougal Algebra 1 2 4 6 8 10

Solving Inequalities by 2 -2 Adding or Subtracting Check It Out! Example 1 Solve each inequality and graph the solutions. a. s + 1 ≤ 10 9 – 10 – 8 – 6 – 4 – 2 Holt Mc. Dougal Algebra 1 0 2 4 6 8 10

Solving Inequalities by 2 -2 Adding or Subtracting Lesson Quiz: Part I Solve each inequality and graph the solutions. 1. 13 < x + 7 2. – 6 + h ≥ 15 3. 6. 7 + y ≤ – 2. 1 Holt Mc. Dougal Algebra 1