Use the indicated row operation to change the matrix.
-Replace $ \mathrm{R}_{2} $ by $ \mathrm{R}_{1}+(-1) \mathrm{R}_{2} $.
$ \left[\begin{array}{rr|r}1 & -3 & 4 \ 2 & 3 & 1\end{array}\right] $
A) $ \left[\begin{array}{rr|r}1 & -3 & 2 \ 2 & 3 & 1\end{array}\right] $
B) $ \left[\begin{array}{rr|r}1 & -3 & 2 \ 3 & 0 & 3\end{array}\right] $
C) $ \left[\begin{array}{rr|r}1 & -3 & 2 \ 1 & 6 & -1\end{array}\right] $
D) $ \left[\begin{array}{rr|r}1 & -3 & 4 \ -1 & -6 & 3\end{array}\right] $

Question

Quizplus · Accepted Answer

To replace $ \mathrm{R}_{2} $ by $ \mathrm{R}_{1}+(-1) \mathrm{R}_{2} $, we perform the operation on each element of the row: $1-2=-1$, $-3-3=-6$, and $4-1=3$, resulting in the new $ \mathrm{R}_{2} $ as $[-1, -6, 3]$.

Use the Indicated Row Operation to Change the Matrix R2 \mathrm{R}_{2} R2​

Use the Indicated Row Operation to Change the Matrix $\mathrm{R}_{2}$