Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 3 - Section 3.4 - The Slope of a Line - Exercise Set: 46



Work Step by Step

The line $y-7=0$ also can be written as $y=7$. $y=7=0x+7$ is written in the form $y=mx+b$, where m is the slope of the line. $m=0$, so the slope of the line is zero. In general, horizontal lines, which are written in the form $y=b$, have a slope of zero.
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