Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 10 - 10.1 - Matrices and Systems of Equations - 10.1 Exercises - Page 709: 25


$9x+12y+3z=0 \\ -2x+18y+5z+2w=10 \\ x+7y-8z=-4\\3x+2z=-10$

Work Step by Step

In order to write a matrix that will solve a linear equation, we will write the coefficients of each variable in their own column. Each entry in the matrix shows the coefficient of the variables of the system of equations. Therefore, we reverse the process to compute: $9x+12y+3z=0 \\ -2x+18y+5z+2w=10 \\ x+7y-8z=-4\\3x+2z=-10$
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