Use Matrices and Gauss-Jordan Elimination to Solve Systems
- $$\begin{array} { l } x = - 1 - y - z \\x - y + 4 z = - 6 \\3 x + y = 7 - z\end{array}$$

Multiple Choice

Use Matrices and Gauss-Jordan Elimination to Solve Systems
- $$\begin{array} { l } x = - 1 - y - z \\x - y + 4 z = - 6 \\3 x + y = 7 - z\end{array}$$

A) $\{ ( 4 , - 2 , - 3 ) \}$
B) $\{ ( - 2 , - 3,4 ) \}$
C) $\{ ( - 3 , - 2,4 ) \}$
D) $\{ ( - 3,4 , - 2 ) \}$