Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 11 - Cumulative Test for Chapters 9-11 - Page 844: 2



Work Step by Step

$x+3y=-6\\2x+6y=-12$. $(2x+6y)-(2x+4y)=-12-(-10)\\2y=-2\\y=-1$ Thus $2x+6(-1)=-12\\2x=-6\\x=-3$. Thus the solution is $(-3,-1).$
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