Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Appendix B - Matrices - B Exercises - Page B-15: 25

Answer

$\begin{bmatrix} -2&3 &-1 & 0\\ 1 & 1 & -1 &5 \\ 1 & -1 &1 &2 \end{bmatrix}$.

Work Step by Step

The given system is $\left\{\begin{matrix} -2x &+3y &-z& = &0 \\ x& +y & -z&= &5 \\ x&-y&+z&=&2 \end{matrix}\right.$ For the augmented matrix First column $=$ coefficients of $x$. Second column $=$ coefficients of $y$ third column $=$ coefficients of $z$ and fourth column $=$ the right-hand side. The augmented matrix is $\begin{bmatrix} -2&3 &-1 & 0\\ 1 & 1 & -1 &5 \\ 1 & -1 &1 &2 \end{bmatrix}$.
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