Exercises 37-38 In Exercises 37-40, find the slope of the line passing through each pair of points or state that the slope is undefined. Then indicate whether the line through the points rises, falls, is horizontal, or is vertical. 37. (3,2) and (5, 1) 38. (-1, -2) and (-3, -4) Exercises 41-44 In Exercises 41-44, use the given conditions to write an equation for each line in point-slope form and slope-intercept form. 41. Passing through (-3, 2) with slope -6 42. Passing through (1, 6) and (-1, 2) 43. Passing through (4, -7) and parallel to the line whose equation is 3x + y - 9 = 0 44. Passing through (-3, 6) and perpendicular to the line whose equation is y = 3x + 4 Exercises 46-48 In Exercises 46-49, give the slope and y-intercept of each line whose equation is given. Then graph the line. 46. y = Ex - 1 47. f(x) = -4x + 5 48. 2x + 3y + 6 =0 Exercises 60-61 In Exercises 60-63, begin by graphing the standard quadratic function, f(x) = x2. Then use transformations of this graph to graph the given function. 60. g(x) = x2+ 2 61. h(x) = (x + 2)2 Exercises 82, 85 In Exercises 82-84, find f + g, f - g, fg, and g. Determine the domain for each function. 82. f(x) = 3x - 1, g(x) = x - 5 In Exercises 85-86, find a. (fog)(x); b. (g . f)(x); c. (fog)(3). 85. f(x) = x2 + 3, g(x) = 4x - 1