Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 4 - Review Exercises: 23

Answer

{(-1,-$\frac{1}{2}$)}

Work Step by Step

8y=4x 4x=8y $\frac{4}{4}$x=$\frac{8}{4}$y x=2y Plug this value for x into the other equation 7x+2y=-8 7(2y)+2y=-8 14y+2y=-8 16y=-8 y=-$\frac{8}{16}$ y=-$\frac{1}{2}$ Therefore the solution is {(-1,-$\frac{1}{2}$)}
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