Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 10 - Cumulative Review: 29

Answer

$y=-3x-2$

Work Step by Step

In the equation $y=mx+b$, $m$ is the slope and $b$ is the y-intercept. Since the slope is $-3$, the equation becomes $y=-3x+b$. Now, we substitute the point (1,-5) in the equation to find the intercept b: $y=-3x+b$ $-5=-3(1)+b$ $-5=-3+b$ $-5+3=b$ $b=-2$. Therefore, the equation of the line is $y=-3x-2$.
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