College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 5, Systems of Equations and Inequalities - Section 5.1 - Systems of Linear Equations in Two Variations - 5.1 Exercises: 31

Answer

(6, -6)

Work Step by Step

Add both equations to each other $-\frac{1}{3}x - \frac{1}{6}y = -1$ $\frac{2}{3}x + \frac{1}{6}y = 3$ $\frac{1}{3}x = 2$ x = 6 Plug x = 6 into $-\frac{1}{3}x - \frac{1}{6}y = -1$ $-\frac{1}{3}6 - \frac{1}{6}y = -1$ $-2 - \frac{1}{6}y = -1$ $-\frac{1}{6}y = 1$ y = -6 Solution is (6, -6)
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