Algebra 2 (1st Edition)

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

Chapter 3 Linear Systems and Matrices - 3.6 Multiplying Matrices - 3.6 Exercises - Mixed Review - Page 202: 60


$x=-2$ and $y=-10$

Work Step by Step

$3x-y=4$ $/\times(3)$ $-2x+3y=-26$ __________________ $9x-3y=12$ $-2x+3y=-26$ __________________ $7x=-14$ $x=\frac{-14}{7}$ $x=-2$ For $x=-2$... $3(-2)-y=4$ $-y=4+6$ $y=-10$
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