Answer
x=$\frac{4}{3}$
Work Step by Step
Given A(2,1) B(x,3), m=-3
Slope formula m = $\frac{y2-y1}{x2-x1}$
-3= $\frac{3-1}{x-2}$
-3=$\frac{2}{x-2}$
-3x+6 =2
x=$\frac{4}{3}$
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 - Review Exercises - Page 494: 9
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