Use the matrix capabilities of a graphing utility to reduce the augmented matrix corresponding to the system of equations, and solve the system.
$$\left\{ \begin{array} { c }
x - 7 y - 3 z = 64 \
3 x + 7 y + 2 z = - 92 \
- 2 x + 14 y + 6 z = 64 \
- 8 x + 2 y + 2 z = 42
\end{array} \right.$$
A) $x = - 9 , y = - 7 , z = - 8$
B) $x = 75 , y = 2 , z = - 1$
C) $x = - 9 , y = 7 , z = 8$
D) $x = - 9 , y = - 7 , z = 8$
E) no solution

Question

Use the matrix capabilities of a graphing utility to reduce the augmented matrix corresponding to the system of equations, and solve the system.
$$\left\{ \begin{array} { c } 
x - 7 y - 3 z = 64 \
3 x + 7 y + 2 z = - 92 \
- 2 x + 14 y + 6 z = 64 \
- 8 x + 2 y + 2 z = 42
\end{array} \right.$$
A) $x = - 9 , y = - 7 , z = - 8$
B) $x = 75 , y = 2 , z = - 1$
C) $x = - 9 , y = 7 , z = 8$
D) $x = - 9 , y = - 7 , z = 8$
E) no solution

Quizplus · Accepted Answer

The Answer of Use the matrix capabilities of a graphing utility to reduce the augmented matrix corresponding to the system of equations, and solve the system.
$$\left\{ \begin{array} { c } 
x - 7 y - 3 z = 64 \
3 x + 7 y + 2 z = - 92 \
- 2 x + 14 y + 6 z = 64 \
- 8 x + 2 y + 2 z = 42
\end{array} \right.$$
A) $x = - 9 , y = - 7 , z = - 8$
B) $x = 75 , y = 2 , z = - 1$
C) $x = - 9 , y = 7 , z = 8$
D) $x = - 9 , y = - 7 , z = 8$
E) no solution