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 (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: 11a
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