Use the Given Row Transformation to Change the Matrix as Indicated

question 490

Multiple Choice

Use the given row transformation to change the matrix as indicated.
- $\left[ \begin{array} { r r r } 2 & 1 & 4 \\ - 4 & 3 & - 1 \\ 7 & 4 & 0 \end{array} \right] ; 2$ times row 1 added to row 2

• A)
• \(\left[ \begin{array} { l l l } 2 & 1 & 4 \\ 0 & 5 & 7 \\ 7 & 4 & 0 \end{array} \right]\)
• B)
• \(\left[ \begin{array} { r r r } 2 & 1 & 4 \\ - 4 & 3 & - 1 \\ 11 & 6 & 8 \end{array} \right]\)
• C)
• \(\left[\begin{array}{lll}
• 2 & 1 & 4 \\
• 0 & 3 & 7 \\
• 7 & 4 & 0
• \end{array}\right]\)
• D)
• \(\left[\begin{array}{lll}
• 4 & 2 & 8 \\
• 0 & 5 & 7 \\
• 7 & 4 & 0
• \end{array}\right]\)