Write the Augmented Matrix Associated with the System $\left\{ \begin{array} { c } - 2 x + 2 y + 7 z = 57 \\ 8 x - 2 y - 2 z = - 34 \\ - 2 x + 7 y + 9 z = 81 \end{array} \right.$

question 139

Multiple Choice

Write the augmented matrix associated with the system.
- $\left\{ \begin{array} { c } - 2 x + 2 y + 7 z = 57 \\ 8 x - 2 y - 2 z = - 34 \\ - 2 x + 7 y + 9 z = 81 \end{array} \right.$

• A)
• \(\left[ \begin{array} { r r r | r } - 2 & 2 & 7 & 57 \\ 8 & - 2 & - 2 & - 34 \\ - 2 & 7 & 9 & 81 \end{array} \right]\)
• B)
• \(\left[ \begin{array} { r r r } - 2 & 2 & 7 \\ 8 & - 2 & - 2 \\ - 2 & 7 & 9 \end{array} \right]\)
• C)
• \(\left[ \begin{array} { r r r | r } 57 & 7 & - 2 & - 2 \\ - 34 & - 2 & - 2 & 8 \\ 81 & 9 & 7 & - 2 \end{array} \right]\)
• D)
• \(\left[ \begin{array} { r r r | r } - 2 & 8 & - 2 & 57 \\ 2 & - 2 & 7 & - 34 \\ 7 & - 2 & 9 & 81 \end{array} \right]\)

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