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

question 56

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) \[\left[ \begin{array} { l l }
• 1 & 1 \\
• 4 & 1
• \end{array} \right] \left[ \begin{array} { l }
• x _ { 1 } \\
• x _ { 2 }
• \end{array} \right] = \left[ \begin{array} { l }
• 8 \\
• 0
• \end{array} \right]\]

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