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1. B 2. A 3. C 4. A 5. D 6. B 7. D 8. A 9. D 10. B. 11. x = -4 12. x = -16 13. x = -1 14. 8 messages 15. 1 month 16. 17. 18. 59º 19. x = -27/5 or -5.4 20. 28 feet 21. 4 2/7 or 30/7 . Answers to Unit 2 Test. Graphing Inequalities. The Solution of An Inequality is….
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1. B 2. A 3. C 4. A 5. D 6. B 7. D 8. A 9. D 10. B 11. x = -4 12. x = -16 13. x = -1 14. 8 messages 15. 1 month 16. 17. 18. 59º 19. x = -27/5 or -5.4 20. 28 feet 21. 4 2/7 or 30/7 Answers to Unit 2 Test
The Solution of An Inequality is… • Any value of the variable that makes the inequality true • It is easier to understand the solution once it is graphed on a number line • MUST be written as a complete mathematical sentence (x > 5 rather than just 5)
Inequality Symbols • > means greater than • > means greater than or equal to • < means less than • < means less than or equal to • means not equal to
Graphing Greater Than • Use an open circle • Shade to the right • Put an arrow at the end of the shading
Graphing Greater Than or Equal • Use a colored in circle • Shade to the right • Put an arrow at the end of the shading
Graphing Less Than • Use an open circle • Shade to the left • Put an arrow at the end of the shading
Graphing Less Than or Equal To • Use a colored in circle • Shade to the left • Put an arrow at the end of the shading
Graphing Not Equal To • Use an open circle • Shade both directions • Put an arrow at the both ends of the shading
Graphing Equal To • Use a colored in circle • No shading
And now… • Assignment #14 pages 177 – 179 (25 – 53 odd) AND pages 183 – 185 (51 – 83 eoo) • Test corrections are due on Monday, September 26th. • Why? Because that is the NEXT test!