The transformation $\text E\,\vec{x}$ is defined by the following matrix. $\text E = \left[\begin{array}{rr}1 & -2 & -3& 0\\ 0 & 1 & -2 & 1\\ -4 & -4 & 7 &6\\ 0 & 1 & 1 & 0\end{array}\right]$ **Find the result of $\text E\,\vec{v}$ for $\vec{v}=\left[\begin{array}{r}9 \\ -2 \\ -8 \\5\end{array}\right]$.** [[☃ matrix 1]]