chapter 3 review y - math tv schools media server 3 review 1-4. 7. 8. 9. x-intercept = 6;...

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Chapter 3 Review 1-4. 7. 8. 9. x-intercept = 6; y-intercept = −1 10. x-intercept = 20 3 ; y-intercept = −2 11. x-intercept = −2; y-intercept = 2 12. x-intercept = −2; y-intercept = −2 13. − 1 3 14. 2 15. −2 16. 0 17. No slope 18. 2 19. 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 + 8 28. 29. Chapter 3 Cumulative Review 1. −1 2. −1 3. 2 4. −8 5. 32 6. −40 7. Undeﬁned 8. 1 3 9. 5 7 10. 0 11. 36x 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 3 x 35. y = 3 2 x − 8 36. y = 3 5 x − 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, e attendance from 1955 to 1970 was increasing at an average rate of 0.6 million people every year 48. 0.1475, e attendance from 1970 to 2010 was increasing at an average rate of 0.1475 million people every year Chapter 3 Test 1-4. 7. 8. x y ( (1.2, 1.2, −2) 2) (2 (2, − −1) 1) ( (− −3, 3, 5) 5) 1 1 2 2 2 2 , , 2 2 0 0 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) 2 x y ( (0, 0, −3) 3) x y 2 2 − 1 1 2 2 x y 4 4 4 − 3 3 2 2 x y 2 3 ,0 0 (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 2 2 2 − 3 3 2 2 x y 5 5 x ( ( 2 23, 0) 3, 0) x y (0 (0, − −4) 4) (2 (2, − −1) 1) ( (−3, 3, −2) 2) ( (− −4, 4 3 3) ) 5. (0, −3), (2, 0), ( 4, 3), ( −2, −6) 6. (0, 7), (4, −5) 10 x y ( 0, 4) 0, 4) ( (8, 0) 8, 0) 2 2 4 4 6 8 6 8 − −10 10 − −8 8 − −6 6 −4 4 − −2 2 10 x y ( (0, 0 2 23) 3)

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Chapter 3 Review1-4.

7. 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_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 + 8

28. 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_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 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

1122x

y

444 3322

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

3322x

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

101088664422 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 2

20. 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