Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 2 - Review Exercises: 16

Answer

$m=\text{undefined}$

Work Step by Step

Using $m=\dfrac{y_1-y_2}{x_1-x_2}$ or the Slope Formula, the slope of the line through $( -1,5 )$ and $( -1,-4 )$ is \begin{array}{l}\require{cancel} m=\dfrac{5-(-4)}{-1-(-1)} \\\\ m=\dfrac{5+4}{-1+1} \\\\ m=\dfrac{9}{0} \\\\ m=\text{undefined} .\end{array}
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