Let $\vec{x}=\left[\begin{array}{cc} -4 &1 \end{array}\right]$ and $\vec{y}=\left[\begin{array}{cc} -4 &4 \end{array}\right]$. Find the following vectors.

$\vec{v} = 7 \vec{x} =$ $\left[\Rule{0pt}{1.2em}{0pt}\right.$$\left]\Rule{0pt}{1.2em}{0pt}\right.$.
$\vec{u} = -5 \vec{y} =$ $\left[\Rule{0pt}{1.2em}{0pt}\right.$$\left]\Rule{0pt}{1.2em}{0pt}\right.$.
$\vec{w} = 7 \vec{x} - 5 \vec{y} =$ $\left[\Rule{0pt}{1.2em}{0pt}\right.$$\left]\Rule{0pt}{1.2em}{0pt}\right.$.