Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 9 - Quadratic Functions and Equations - 9-7 Linear, Quadratic, and Exponential Models - Mixed Review - Page 580: 37


$x=1$, $y=-2$

Work Step by Step

$-2x+15y=-32$ $7x-5y=17$ $3*(7x-5y=17)$ $21x-15y=51$ $-2x+15y=-32$ $21x-15y=51$ $21x-15y-2x+15y =51-32$ $19x = 19$ $19x/19 = 19/19$ $x=1$ $7x-5y=17$ $7*1-5y=17$ $7-5y=17$ $7-5y-7=17-7$ $-5y=10$ $-5y/-5=10/-5$ $y=-2$
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