Explanation Recall: (1) The equation of the line in slope-intercept form is y = m x + b , where m is slope of the line and b is y -intercept of the line. (2) “Two lines are perpendicular if and only if the product of their slopes is −1, or if one is vertical and the other horizontal.” Calculation: Clearly both lines y = 3 x + 17 and y = − 3 x + 8 are in slope intercept form

10th Edition

ISBN: 8220102020252

Author: RITCHEY

Publisher: PEARSON

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Chapter 1, Problem 9RE

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To decide: Whether the statement, “The lines y=3x+17 and y=−3x+8 are perpendicular” is true or false.

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Chapter 1, Problem 8RE

Chapter 1, Problem 10RE

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To decide: Whether the statement, “The lines y = 3 x + 17 and y = − 3 x + 8 are perpendicular” is true or false.

Solution Summary: The author explains that two lines are perpendicular if the product of their slopes is 1 or vertical and horizontal.

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To decide: Whether the statement, “The lines y=3x+17 and y=−3x+8 are perpendicular” is true or false.

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Chapter 1 Solutions