Matrices as Functions Practice Test

$\mathbf{A}\mathbf{v}=\begin{pmatrix}6\-4\end{pmatrix}$, a horizontal stretch by factor $3$.

$\mathbf{A}\mathbf{v}=\begin{pmatrix}2\-1\end{pmatrix}$, a vertical shrink by factor $4$.

$\mathbf{A}\mathbf{v}=\begin{pmatrix}6\-12\end{pmatrix}$, a uniform scale by factor $3$.

$\mathbf{A}\mathbf{v}=\begin{pmatrix}5\-4\end{pmatrix}$, a translation right by $3$.