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Warm ups

Warm ups. Solve for x. 3 + x < 12 23 > x – 15 2x – 10 > x + 6 -3.4 > 0.9 – p -3 + x > 2x – 4. x < 9 x < 38 x > 16 p > 4.3 x < 1 x = 27. 7-2 Solving Inequalities Using Multiplication and Division. Objective: To solve inequalities by multiplying and dividing. Standard 5.0.

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Warm ups

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  1. Warm ups Solve for x. • 3 + x < 12 • 23 > x – 15 • 2x – 10 > x + 6 • -3.4 > 0.9 – p • -3 + x > 2x – 4 • . • x < 9 • x < 38 • x > 16 • p > 4.3 • x < 1 • x = 27

  2. 7-2 Solving Inequalities Using Multiplication and Division Objective: To solve inequalities by multiplying and dividing. Standard 5.0

  3. Flip Inequality sign when: • You need to move the letter (variable) to the left 3 < x -5 > p • You multiply or divide by a negative number -2x > 4

  4. Examples – solve and graph • 3w > 27 3 3 w > 9 • x < 3 12 2 x < 18 6 (12) (12)

  5. Examples – solve and graph • -4x < -3 -4 -4 x > 3/4 • 18 < -3m 4 -24 > m m < -24 Divide by a negative – FLIP! 6 -4 3 -4 3 Multiply by a negative – FLIP! Move letter to left – FLIP!

  6. TOO – watch the flip!

  7. Multi-step inequalities • 3n + 4 > -14 -4 -4 3n > -18 3 3 n > - 6

  8. Homework • Pg. 396 # 21-43 ODD

  9. 7-1 – 7-2 Review Math Lab. Standard 5.0

  10. Flip Inequality sign when: • You need to move the letter (variable) to the left 3 < x -5 > p • You multiply or divide by a negative number -2x > 4

  11. 7-1 Review

  12. 7-2 Review

  13. 7-3 Preview/Review

  14. 7-3 Preview/Review

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