Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.4 - Linear Functions and Slope - Concept and Vocabulary Check - Page 212: 6



Work Step by Step

RECALL: Slope is rise over run. $\left(\dfrac{rise}{run}\right)$. A vertical line has no $(zero)$ run since all the points belong to the same vertical line. There is no change horizontally. Note that any number divided by zero is undefined. Thus, a vertical has an undefined slope.
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