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