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152E3-S2010

152E3-S2010 - MA 15200 Exam 3A 2 if x 2 2 Given g x = x if...

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MA 15200 Exam 3A Spring 2010 1 1) Given 2 2 if 2 ( ) if 2 2 1 if 2 x g x x x x x ≤ - = - < + > Find ( 2), ( 1), and (2) g g g - - . ( 2) 4, ( 1) 1, (2) 4 ( 2) 4, ( 1) 1, (2) 3 ( 2) 2, ( 1) 1, (2) 3 ( 2) 2, ( 1) 1, (2) 4 None of the above. A g g g B g g g C g g g D g g g E - = - = = - = - = - = - = - = = - = - = = 2) Which graph best approximates a line perpendicular to 5 8 3 y x = - , and through the same y -intercept? 3) If a point on a line is ( 4,3) - and its slope is 3 - , find its x- intercept and y -intercept . Hint: Find an equation for the line first. 7 3 -intercept: 3 -intercept: 9 -intercept: 1 -intercept: 3 -intercept: 3 -intercept: 9 -intercept: -intercept: 7 -intercept: 5 -intercept A x y B x y C x y D x y E x y - - - : 15 D B A C E

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MA 15200 Exam 3A Spring 2010 2 4) The collision impact of a car varies jointly as its mass (weight) and the square of its speed. Suppose a 2000 pound car traveling at 55 miles per hour has a collision impact of 6.1. What is the approximate collision impact of the same car at 65 miles per hour? (Round to the nearest tenth.)
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152E3-S2010 - MA 15200 Exam 3A 2 if x 2 2 Given g x = x if...

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