Answer
$\frac{d-b}{c-a}$
Work Step by Step
(a,b) and (c,d)
x1=a, y1=b,x2=c,y2=d
Using slope formula
m = $\frac{y2-y1}{x2-x1}$
m= $\frac{d-b}{c-a}$
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 10 - Section 10.2 - Graphs of Linear Equations and Slope - Exercises - Page 458: 11e
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