Answer
$3$
Work Step by Step
By using the slope formula, $m=\frac{y_2-y_1}{x_2-x_1}=\frac{1-4}{1-2}=\frac{-3}{-1}=3.$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 3 - P.S. Problem Solving - Page 308: 10b
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