\(x+ 2y = 9 \\ 7x+ 8y = - 1\)
\(\begin{bmatrix} 1 & 2 &\big m| & 9 \\ 0 & - 6 &\big m| & - 64 \\ \end{bmatrix} \)
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Hampton Weston
13/06/2022 · Middle School
Write the system of equations corresponding to the given augmented matrix using the variables \(x\) and \(y\) . Then perform the row operation \(R _ { 2 } = - 7 r _ { 1 } + r _ { 2 } \) on the given augmented matrix.
\(\begin{bmatrix} 1 & 2 &\big m| & 9 \\ 7 & 8 &\big m| & - 1 \\ \end{bmatrix} \)
\(x+ 2y = 9 \\ 7x+ 8y = - 1\)
\(\begin{bmatrix} 1 & 2 &\big m| & 9 \\ 0 & - 6 &\big m| & - 64 \\ \end{bmatrix} \)
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