Chapter 3 Review1-4.
7. 8.
9. x-intercept = 6; y-intercept = −1
10. x-intercept = 20__3 ; y-intercept = −2
11. 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_
5 x + 8_5
22. y = − 6_5 x + 18__
5 23. y = − 1_2 x + 2 24. m = 4, b = −3
25. m = 4_5, b = −2 26. y = 3x − 4 27. y = 3_
2 x + 828. 29.
Chapter 3 Cumulative Review1. −1 2. −1 3. 2 4. −8 5. 32 6. −40 7. Undefi ned 8. 1_
3 9. 5_7 10. 0 11. 36xx
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) = 1240. −20 41. 3_
5, − 5_3, 3_
542. −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 yearChapter 3 Test1-4.
7. 8.
x
y
((1.2,1.2, −2)2)
(2(2, −−1)1)
((−−3,3, 5)5)
112222 ,, 22 00
5. (3, − 4_5 ), (−2, − 14__
5 )( 27__
3 , 2_3 ), ( 1_2 , − 9_
5 )
6. (10, 0), (8, −1.6)
x
y
2__3, 0 , 0
(0,0 −−2)2x
y
((0,0, −3)3)
x
y
22
− 1122
x
y
444− 33
22
x
y
233,00
(0(0, −2)2)
x
y
(0(0, 2)2)
((3, 0)3, 0)
x
y
(0(0, 0)0)x
y
(0(0, 0)0)
x
y
222
− 3322
x
y
55
x
((223, 0)3, 0)
x
y
(0(0, −−4)4)
(2(2, −−1)1)
((−3,3, −2)2)
((−−4,4 33))
5. (0, −3), (2, 0), (4, 3), (−2, −6)6. (0, 7), (4, −5)
10x
y
((0, 4)0, 4)((8, 0)8, 0)
22 44 6 86 8
−−1010−−88−−66−44−−22 10
x
y
((0,0 223)3)
9. x-intercept = 2; y-intercept = −4 10. x-intercept = −4; y-intercept = 611. x-intercept = −2; y-intercept = 412. − 1_
2 13. − 8_7 14. −3 15. No slope 16. 0
17. y = −1_2x + 3 18. y = 3x − 5 19. y = − 2_
3x − 220. y = −x + 2 21. y = 3_
2x_ + 6 22. y = −3x − 17 23. y = 3_
2x_ + 4 24. y = 3_2x_ + 7 25. y = 2x − 6
26. 27.
x
y
6666
−−66
x
y
333
−222
