Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 3 Linear Systems and Matrices - 3.1 Solve Linear Systems by Graphing - 3.1 Exercises - Mixed Review - Page 158: 50


$y=4x-\frac{7}{2}$ when $x=-1$ then $y=-\frac{15}{2}$

Work Step by Step

$8x-2y=7$ $2y=8x-7$ $y=4x-\frac{7}{2}$ when $x=-1$ $y=4\times(-1)-\frac{7}{2}$ $y=-4-\frac{7}{2}=-\frac{8}{2}-\frac{7}{2}=-\frac{15}{2}$
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