Write the System of Linear Equations as a Matrix Equation $$\left\{ \begin{array} { r } - x _ { 1 } + x _ { 2 } = 8 \\- 4 x _ { 1 } + x _ { 2 } = 0\end{array} \right.$$

Multiple Choice

Write the system of linear equations as a matrix equation, AX = B. $$\left\{ \begin{array} { r } - x _ { 1 } + x _ { 2 } = 8 \\- 4 x _ { 1 } + x _ { 2 } = 0\end{array} \right.$$

A) $\left[ \begin{array} { l l } - 1 & 1 \\- 4 & 1\end{array} \right] \left[ \begin{array} { l } x _ { 1 } \\x _ { 2 }\end{array} \right] = \left[ \begin{array} { l } 8 \\0\end{array} \right]$
B) $\left[ \begin{array} { c c } 1 & 1 \\- 4 & - 1\end{array} \right] \left[ \begin{array} { l } x _ { 1 } \\x _ { 2 }\end{array} \right] = \left[ \begin{array} { l } 8 \\0\end{array} \right]$
C) $\left[ \begin{array} { l l } - 1 & 1 \\- 4 & 1\end{array} \right] \left[ \begin{array} { c } - x _ { 1 } \\- x _ { 2 }\end{array} \right] = \left[ \begin{array} { l } 8 \\0\end{array} \right]$
D) $\left[ \begin{array} { l l } - 1 & - 1 \\- 4 & - 1\end{array} \right] \left[ \begin{array} { l } x _ { 1 } \\x _ { 2 }\end{array} \right] = \left[ \begin{array} { l } 8 \\0\end{array} \right]$
E) $\left[ \begin{array} { l l } 1 & 1 \\4 & 1\end{array} \right] \left[ \begin{array} { l } x _ { 1 } \\x _ { 2 }\end{array} \right] = \left[ \begin{array} { l } 8 \\0\end{array} \right]$