Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 4 - Test: 1

Answer

x=1, y=3

Work Step by Step

{2x-y=-1 {5x+4y=17 Use elimination to solve the system. Multiply the first equation by 4. Solve for x. 8x-4y=-4 5x+4y=17 13x=13 x=1. Plug x back into the equation. 2(1)-y=-1 2-y=-1 (Subtract 2 from both sides.) -y=-3 y=3.
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