Chapter 9 Review1. (−3, 5) 2. (0, −2) 3. (2, 5) 4. (4, 2) 5. (1_

2 , 1, 1_ ) 6. (1, −2, 3) 7. 2 8. −2 9. (34__

11 , 3__11) 10. 3 and 1311. $1,750 at 12%, $3,500 at 10% 12. 543 adult tickets, 362 children's tickets 13. Boat: 7 mph; Current: 3 mph 14. 2 quarters, 5 dimes, 15 nickels 15. 16.

17. y ≤ 2_5x _ + 2, y < − 3_2x_ + 3 18. y > x + 2, y ≥ −3_2x_ − 3

Chapter 9 Cumulative Review1. −40 2. 16 3. 1 4. −49 5. −4 6. −35 7. 1 8. 0 9. Ø 10. Ø 11. x = −4____

a − b

12. x = − 1____a − c 13. [−3, ∞) 14. (−∞, −4_

3 ] _ ∪ [2, ∞] 15. {0, 1, 3, 5, 7, 10, 15} 16. {5} 17. (−4, −5) 18. Lines are parallel; Ø 19. Lines coincide 20. (0, −2, 4) 21. x2 − 3_

2x _ + 9__16 22. 125b____

a 2 23. 1.6 × 10 8 24. 3 × 10 6 25. (x + a)(x − b) 26. (4a + 7)(2a − 1) 27. (x + 3)(x − 5) 28. (t + 1_3)(t 2t − 1_3t + 1_9)29. 30.

31. y = −3_4x_ − 3 32. y = 2x − 16 33. $2.10

34. 10 lbs. per in2 35. 1 36. 2 37. −1 38. 8

Chapter 9 Test1. (25__

16 , −11__8 ) 2. (4, 9) 3. (6, 7) 4. (5, 3) 5. (1, 2_3 , 2_3)

6. (−2, 2, 1) 7. 2 8. 0 9. ( 47__26 , 29__

26) 10. 4, 4 11. $1,200 at 13%, $3,600 at 17% 12. 730 adult tickets, 160 children’s tickets 13. Boat: 6 mph; Current: 3 mph 14. 3 quarters, 1 dime, 4 nickels 15. 16.

17. y3

y 3 1 18. y3

y 4_3 x + 1

y

x

y

x

y

x

y

y y