Answer
$\{(-2,0)\}$
Work Step by Step
Use substitution, the first equation gives $y=-2x-4$, use it in the second equation, we have $-x+2(-2x-4)=2$, $-x-4x-8=2$, $5x=-10$ thus $x=-2$ and $y=-2(-2)-4=0$. The solution set is $\{(-2,0)\}$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 9 - Systems and Matrices - Quiz - Page 896: 1
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
