Graphing Systems of Linear Inequalities · Review Exercise 102

Perform the indicated operations on the augmented matrices.

$[\begin{array}{rlrlrlr}1& & & -3& & & -2\\ 2& & & 2& & & -1\\ 4& & & -2& & & -3\end{array}|\begin{array}{c}4\\ -3\\ -1\end{array}]$
ⓐ Interchange rows 2 and 3.
ⓑ Multiply row 1 by 2.
ⓒ Multiply row 3 by $-2$ and add to row 2.

OpenStax, Intermediate Algebra 2e · §4.7 Graphing Systems of Linear Inequalities · Review Exercise 102