Answer
$$m=-5$$
Work Step by Step
Using the equation for slope, we find:
$$ \mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1} \\ m=\frac{10-5}{1-2} \\ m=-5$$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 1-7 - Cumulative Review - Page 500: 27
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