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Pre-Calculus Homework Solutions 70

# Pre-Calculus Homework Solutions 70 - 49 m y y y(y2 y1(x2 x1...

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Unformatted text preview: 49. m y y y (y2 y1) (x2 x1) 11 7 ¬3 5 ¬ 4 or 1 8 2 ¬ y1 7 ¬ y 1 2x 1 2x ¬ 5 2 19 2 1 2x 50. The slope of y perpendicular y y1 ¬m(x y 1 ¬ 2(x y 1 ¬ 2x y ¬ 2x 4 is 1 , so a line 2 4 has slope 1 2x to y x1) 4) 8 9 52. slope of CD 2 53. slope of AB 54. slope of EO 0 0 2 55. slope of DE 4 2. T F T F 58. p T T F F 59. p q T F T F T T F F T F T F 60. q pq T T F F T F T F 2) 4) or 1 or 1 2 3) 4 y1)2 [2 ( 4)]2 X, T, , n 2 ENTER ( ) 1 X, T, , N 2 4 ZOOM 6 Use the CALC menu to find the points of intersection. Find the intersection of a and t. KEYSTROKES: 2nd [CALC] 5 ENTER ENTER ENTER T F F F q p or q F T T T F F T T p p F F T T p F F T T Lines a and t intersect at (5.6, 1.2). Find the intersection of b and t. ENTER KEYSTROKES: 2nd [CALC] 5 ENTER ENTER q F F T F q F T F T p q Lines b and t intersect at (2.4, 2.8). 2. Enter the equations in the Y list and graph in the standard viewing window. KEYSTROKES: Y ( ) X, T, , n 3 ENTER F F F T ( ) X, T, , n 61. A picture frame has right angles, so the angles must be complementary angles. 62. d ¬ (x2 x1)2 (y2 y1)2 ¬ (7 2)2 (19 ¬ 52 122 ¬ 169 or 13 Chapter 3 0)2 1. Enter the equations in the Y list and graph in the standard viewing window. KEYSTROKES: Y 2 X, T, , n 10 ENTER 2 ¬ 5 , which is undefined 0 Any line parallel to DE also has undefined slope. 5 56. slope of BD 4 (from Exercise 51) The slope of any line perpendicular to BD is 4 . 5 57. p q p and q T T F F ¬ ( 1 8)2 (2 ¬ ( 9)2 22 ¬ 85 ¬9.22 ¬ (x2 x1)2 (y2 y1)2 Page 158 Graphing Calculator Investigation: Points of Intersection ( ( 2 4 ( ¬0 (y2 ¬ [ 8 ( 6)]2 ¬ ( 2)2 22 ¬8 ¬2.83 5 ¬ 43 02 or 4 3 ( 3) ¬ 4 ( 1) or 0 51. slope of BD ¬ (x2 64. d ¬ m(x x1) ¬ 1 (x 5) 2 7 x1)2 63. d 5 ENTER X, T, , n ZOOM 6 Use the CALC menu to find the points of intersection. 7)2 72 6 ...
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