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2.1 GP Answers

2.1 GP Answers. 10. yes 34. linear, 23 11. yes 35. not linear, 10 12. no 36. not linear, 14 13. yes 42. no 16. yes 43. yes 17. no 18. yes 19. no 20. B 21. yes 22. yes 23. no 25. graph 26. graph 27. graph. 2.2 GP Answers. 3. m = 3/2, positive 4. m = ½, positive

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2.1 GP Answers

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  1. 2.1 GP Answers 10. yes 34. linear, 23 11. yes 35. not linear, 10 12. no 36. not linear, 14 13. yes 42. no 16. yes 43. yes 17. no 18. yes 19. no 20. B 21. yes 22. yes 23. no 25. graph 26. graph 27. graph

  2. 2.2 GP Answers 3. m = 3/2, positive 4. m = ½, positive 5. m = -5/3, negative 6. m = 0, horizontal 18. perpendicular 19. neither • parallel • $6/1 hour • 13 mi/1 gal 41. 7/12 45. A

  3. 2.3 GP Answers 9-15 odd. see graphs 23. C 24. (4,0) and (0,-4) 25. (-15, 0) and (0,-3) 31-37 odd. see graphs 64.a. see graph b. 50 min c. 30 min

  4. 2.4 GP Answers 13. y = -9x + 85 15. y = -4/7 x + 1 17. y = -1/3 x - 2 22. y = 3x + 2 23. y = -3x + 13 26. C 30. y = 2x +5 31. y = -3x +11 32. y = 1/2x - 2 40. 3x + y = 5 42. 3x + 2y = -2

  5. 2.5 GP Answers 3. y = 3x 4. y = -4x 5. y = -3.5x

  6. 2.6 GP Answers 3. strong negative 4. strong positive 5. no correlation 7. r = 0 8. r = 0.5 9. r = -1.0 10. y = 13.1x -3.7, r = .9997, (20, 258.3) 11. y = -20x +141.4, r = -.993, (20, -258.6) 12. y = -1.785x +119.16, r = -.996, (20, 83.46) 25. y = 101.3x + 2236.6, r = .972

  7. Piecewise Fxn. 5-7. see graph

  8. 2.7 GP Answers 4-12. see graphs 16. y = |x – 4| + 3 18. y = |-x| + 2 20. y = 2|x -5| + 2

  9. 2.8 GP Answers 11-14. see graphs 23-25. see graphs

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