Graphing - video-solutions

Graphing - video-solutions - -6 4 . 004 (part 2 of 2) 10.0...

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nanni (arn437) – Graphing - video – CNS – (87654) 1 This print-out should have 7 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points ±ind the equation oF the line that has a slope oF 5 and y -intercept oF 8. 1. y = 8 2. y = 5 x + 8 correct 3. y = 8 x + 5 4. y = x + 8 5. 0 = 5 x + 8 6. 8 = 5 x + y Explanation: Using the slope-intercept Form oF the line, y = 5 x + 8 002 10.0 points Consider the line -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 x y Write its equation 1. y = 2 x - 1 2. y = - x + 2 3. y = - 2 x - 1 4. y = 2 x + 1 5. y = - 2 x + 1 correct Explanation: The line passes through the points (1 , - 1) and ( - 1 , 3), so the slope oF the line is m = 3 - ( - 1) - 1 - (1) = - 2 and y = - 2 x + b . ( - 1 , 3) is on the line, so y - 3 = - 2( x + 1) y - 3 = - 2 x - 2 + 3 = + 3 y = - 2 x + 1 003 (part 1 of 2) 10.0 points ±ind the slope oF the equation oF the line 6 x + 4 y - 6 = 0 Correct answer: - 1 . 5. Explanation: 6 x + 4 y - 6 = 0 4 y = - 6 x + 6 y = - 6 4 x + 6 4 Thus the slope is
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Unformatted text preview: -6 4 . 004 (part 2 of 2) 10.0 points b) ind the y-intercept. Correct answer: 1 . 5. Explanation: The y-intercept is 6 4 = 1 . 5. y x-1 1 2 4 5 1 2 3 4 (0, 3) nanni (arn437) Graphing - video CNS (87654) 2 005 (part 1 of 3) 10.0 points Consider the line y =-x + 7 a) What is its slope? Correct answer:-1. Explanation: When y = mx + b , the slope is the coefcient oF x , so the slope is-1. 006 (part 2 of 3) 10.0 points b) What is its y-intercept? Correct answer: 7. Explanation: The y-intercept is the constant term 7. 007 (part 3 of 3) 10.0 points c) Sketch the line. 1. 2. 3. 4. None oF these. 5. correct Explanation: The line passes through the point (0 , 7) with a slope oF-1. y =-x + 7...
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This note was uploaded on 09/19/2011 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas at Austin.

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Graphing - video-solutions - -6 4 . 004 (part 2 of 2) 10.0...

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