Answer
$(3,-1)$
Work Step by Step
1. Multiply the 1st equation by 2 then add to the 2nd equation to get $5y=-5$, thus $y=-1$
2. Use the 1st equation to get $2x=y+7=6$, thus $x=3$ and the solution $(3,-1)$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 10 - Systems of Equations and Inequalities - Chapter Test - Page 816: 1
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