Answer
$(1,3)$
Work Step by Step
$x+y=4$
$y=3x$
$x+3x=4$
$4x=4$
$x=1$
$1+y=4$
$y=3$
$(1,3)$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 5 - Systems of Equations and Inequalities - Exercise Set 5.1 - Page 527: 5
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