Algebra 2 (1st Edition)

by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee

Published by McDougal Littell

ISBN 10: 0618595414

ISBN 13: 978-0-61859-541-9

Chapter 3 Linear Systems and Matrices - 3.5 Perform Basic Matrix Operations - 3.5 Exercises - Skill Practice - Page 191: 26

Answer

$x=2.5;y=1$

Work Step by Step

We know that each component of each matrix must be equal to the corresponding component of the other matrix. Thus, we find: $$-2x+9 =4 \\ x = 2.5$$ And: $$12+4y =16 \\ 4y =4 \\y=1$$

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