Write the Augmented Matrix for the System of Equations $$\begin{array} { r } x - 5 y + z = 11 \\y + 7 z = 19 \\z = 15\end{array}$$

question 12

Multiple Choice

Write the augmented matrix for the system of equations.
- $$\begin{array} { r } x - 5 y + z = 11 \\y + 7 z = 19 \\z = 15\end{array}$$

• A)
• \(\left[ \begin{array} { r r r | r } 1 & - 5 & 1 & 11 \\ 0 & 1 & 7 & 19 \\ 0 & 0 & 1 & 15 \end{array} \right]\)
• B)
• \(\left[ \begin{array} { r r r | r } 0 & - 5 & 0 & 11 \\ 0 & 0 & 7 & 19 \\ 0 & 0 & 0 & 15 \end{array} \right]\)
• C)
• \(\left[ \begin{array} { l l l | l } 1 & 5 & 1 & 11 \\ 0 & 1 & 7 & 19 \\ 0 & 0 & 1 & 15 \end{array} \right]\)
• D)
• \(\left[ \begin{array} { r r r | r } 1 & - 5 & 1 & 11 \\ 1 & 1 & 7 & 19 \\ 1 & 1 & 1 & 15 \end{array} \right]\)

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