Answer
perpendicular
Work Step by Step
x+3y = 6
y = $\frac{-x}{3}$ + 2
3x-y = -7
y=3x+7
The equations have a slope whose product is -1 therefore the lines are perpendicular.
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 10 - Review Exercises - Page 490: 11a
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