Transcription of 2-8 Solving Absolute-Value Equations and Inequalities
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2-8 Solving Absolute-Value Equations and Inequalities
Name _____ Date _____ Class_____ Original content Copyright by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor. 2-60 Holt Algebra 2 Practice B Solving Absolute-Value Equations and Inequalities Solve each equation. 1. |2x + 1| = 7 2. | 7x| = 28 3. 3|3x| 7 = 2 _____ _____ _____ 4. |2x 5| = 5 5. 2|x + 1| = 14 6. |4 x| + 2 = 9 _____ _____ _____ Solve each inequality or compound inequality. Then graph the solution. 7. 4x + 2 > 10 and 5x 12 < 8 8. 3x 4 8 or x + 12 > 16 _____ _____ 9. |9x| 18 10. |3x 7| > 8 _____ _____ 11. | | > 1 12. |7x| 12 9 _____ _____ Solve. 13. Any measurement is accurate within of the measurement unit.
Solving Absolute-Value Equations and Inequalities Solve each equation. 1. ... sets the absolute value of an expression less than a negative number. Since absolute values are always positive, this is never true. Reteach 1. −1; 2 2. −3; 0 3. x < −3; x ≥ −1 4. x ≥ −2; x < 3
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