Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 2 - Section 2.5 - The Point-Slope Form of the Equation of a Line - Concept and Vocabulary Check - Page 162: 7


$\dfrac{1}{2}$; $-2$

Work Step by Step

RECALL: (i) The linear equation $y=mx+b$ has $m$=the slope and $b$=the y-intercept. (ii) Perpendicular lines have opposite reciporcal slopes. The given equation has $m=\frac{1}{2}$, so the slope of the line is $\frac{1}{2}$. The slope of a line that is perpendicular to this line has a slope of the opposite reciprocal of 1/2. which is $-2$.
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