questions 1,2,9,10,39,42,51 and 52
32. (10, - m is undefined. to the given 33. (-8, 1) m = Point 34. (-3, - 1) m = 2 35. (-5, 4) 69. (2, 1) m = -2 36. (0, -9) 70. (-3, 2) m = -IN 37. (7, - 2) 71. (- 3, 3) 38. (-1, -6) 72. (3. 2 ) In Exercises 39-50, find the slope-intercept form of the 73. (- 1, 0) equation of the line that passes through the given point 74. (4, -2) and has the indicated slope. Sketch the line. 75. (2, 5) Point Slope 76. (-5, 1) 39. (0, -2) m = 3 77. (2.5, 6.8) 40. (0, 10) m = 78. (-3.9, 41. (-3, 6) m = - 42. (0, 0) m = 4 In Exercises 7 43. (4, 0) m = -= tion of the li 44. (-2, -5) form of the e 45. (6, - 1) m is undefined. (0, b) is 46. (-10, 4) m is undefined. 47. (4, 5) + .y = 1, a m = 0 a 48. (-2, 2) m = 49. (-5.1, 1.8) 79. x-intercept m = 5 50. (2.3, -8.5) m = y-intercept InIN 81. x-intercept In Exercises 51-64, find the slope-intercept form of the y-intercept equation of the line passing through the points. Sketch the line. 83. Point on li 51. (5, - 1), (-5, 5) x-intercept 52. (4, 3), ( -4, -4) 53. (- 8, 1 ), (-8, 7) 54. (- 1, 4), (6, 4) y-intercept 55. (2, 2 ), ( 1, 8 ) 56. (1, 1), (6, - 2) 57. (-10, - 3), (10, -3) Graphical Int 58. (3, ;). (-4,7 ) 59. (1, 0.6), (-2, -0.6) relationships 60. (-8, 0.6), (2, -2.4) graphing utili viewing wind 61. (2, -1), (3, -1) slope appears 62. (5, -2), (-6, -2) appear paralle 63. (3. -8), (3, 1) at right angles 64. (1.5, -2), (1.5, 0.2) 85. (a) y = 2x 86. (a) y = 5xre in 2003 (d ) y = mx it-slope form was (v) Horizontal line this case, the predic (e ) y - y = m(x - x,) 10.35.) PREREQUISITE SKILLS REVIEW: Practice and review algebra skills needed for this section at www.Eduspace.com. In Exercises 1 and 2, identify the line that has each slope. N ed linear extrapola- 1. (a) m = 2. (a) m = 0 not lie between the (b) m is undefined. (b) m = - ven points, as shown (c) m = -2 rhiw amis (c) m = 1 equation cannot be LI O equation that can be In Exercises 9-20, find the slope and y-intercept (if possi- X ble) of the equation of the line. Sketch the line. 9. y = 5x + 3 10. y = x - 10 line given by x = a 11. y = -3x + 4 12. y = - 3x+6 In Exercises 3 and 4, sketch the lines through the point with 13. 5x - 2 = 0 14. 3y + 5=0 the indicated slopes on the same set of coordinate axes. 15. 7x + 6y = 30 16. 2x + 3y = 9 Point Slopes 17. y - 3 = 0 18. y + 4 =0 3 . ( 2 , 3 ) (a) 0 (b) 1 (c ) 2 (d ) - 3 19. x + 5 = 0 20. x - 2 = 0 4. (-4, 1) (a ) 3 ( b ) - 3 (c ) 4 ( d ) Undefined In Exercises 21-28, plot the points and find the slope of the In Exercises 5-8, estimate the slope of the line. line passing through the pair of points. 21. (-3, -2), (1, 6) 22. (2, 4), (4, -4) casegole 23. (-6, -1), (-6, 4) 24. (0, - 10), (-4, 0) 25. (4, -4). ( - 2 -3) 26. (3. 4). (2-4) 27. (4.8, 3.1), (-5.2, 1.6) 28. (-1.75, -8.3), (2.25, -2.6)
