Consider the Matrix $\left[ \begin{array} { c c : c } 1 & - 4 & 8 \\2 & 8 & 8\end{array} \right]$

question 247

Multiple Choice

Consider the matrix $\left[ \begin{array} { c c : c } 1 & - 4 & 8 \\2 & 8 & 8\end{array} \right]$ . What elementary row operation was performed to obtain the matrix $\left[ \begin{array} { c c : c } 1 & - 4 & 8 \\0 & 16 & - 8\end{array} \right]$ ?

• A) \(- 2 R _ { 1 } + R _ { 2 }\)
• B) \(2 R _ { 1 } + R _ { 2 }\)
• C) \(- 2 R _ { 2 } + R _ { 1 }\)
• D) \(2 R _ { 2 } + R _ { 1 }\)

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Definitions:

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