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: 20


$$\begin{bmatrix} 9&1&-3&\vdots&21 \\0&-15&13&\vdots &-8 \end{bmatrix}$$

Work Step by Step

In order to write a matrix that would solve this linear equation, we write the coefficients of each variable in their own column. Doing this, we find: $$\begin{bmatrix} 9&1&-3&\vdots&21 \\0&-15&13&\vdots &-8 \end{bmatrix}$$
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