Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 8 - Section 8.3 - The Slope of a Line - Exercises - Page 310: 16

Answer

$-\frac{5}{3}$

Work Step by Step

First point on the line is $(x_1,y_1)= (-2,-1)$. and second point the line is $(x_2,y_2)=(-5,4)$. Slope $m=\frac{y_2-y_1}{x_2-x_1}$. Substitute all the values. $m=\frac{4-(-1)}{-5-(-2)}$ Simplify. $m=\frac{4+1}{-5+2}$ $m=-\frac{5}{3}$.
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