Answer
Undefined
Work Step by Step
$x=-10$ is a vertical line on a graph. All points have the same x-coordinate. So the change in x-coordinate is $0$, making the slope value to have a denominator of $0$, which makes the slope undefined.
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 3 - Cumulative Review - Page 282: 28
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