Chapter 3 Review1-4.

8.

9. x-intercept = 6; y-intercept = −1

10. x-intercept = 20__3 ; y-intercept = −211. x-intercept = −2; y-intercept = 212. x-intercept = −2; y-intercept = −213. − 1_3 14. 2 15. −2 16. 0 17. No slope 18. 219. y = 2x − 7 20. y = −3x + 6 21. y = 1_5x +

8_5

22. y = − 6_5x_ + 18__5 23. y = −

1_2x_ + 2

25.

26. (2005, 4,688), (2006, 3,974), (2007, 4,152), (2008, 4,881),(2009, 3,910), (2010, 4,788)

Chapter 3 Cumulative Review1. −1 2. −1 3. 2 4. −8 5. 32 6. −407. Undefi ned 8. 1_3 9.

5_7 10. 0 11. 36x x

12. 3a − 6 13. −2 14. − 4 15. 1 16. 4 17. − 3_2 18. −98 19. x > −6 20. x ≥ 7 21. 22.

23. 24.

25. 26.

27. No, Yes 28. y-intercept = 6 29. x-intercept = 4; y-intercept = 6 30. 31. m = −1 32. y = −2x + 5

33. m = 3 34. y = 2_3x_x

35. y = 3_2x_ − 8

36. y = 3_5x_ − 3

37. (5, 1), (0, −3) 38. (2,3), (6, 1) 39. 24 − 2(6) = 12 40. −20 41. 3_5, −

5_3,

3_5

42. −4, 1_4, 4 43. −9 44. 1

45. Length = 13 in.; width = 7 in. 46. 7 quarters, 13 dimes 47. 0.6, Th e attendance from 1955 to 1970 was increasing at anaverage rate of 0.6 million people every year 48. 0.1475, Th e attendance from 1970 to 2010 was increasing at an average rate of 0.1475 million people every year

Chapter 3 Test1-4.

x

y

( 3, 5)5. (3, − 4_5 ), (−2, − 14__5 ),

( 27__3 , 2_3 ) , (

1_2 , −

9_5 )

6. (10, 0), (8, −1.6)

x

y

((

x

x

y

x

y

x

x

y 5. (0, −3), (2, 0), (4, 3), (−2, −6) 6. (0, 7), (4, −5)