Let $T: {\mathbb R}^2 \rightarrow {\mathbb R}^2$ be the linear transformation defined by $$T(x,y) = (3x-3y, 9x-9y).$$ Find a vector $\vec{w}$ that is not in the image of $T$.

$\vec{w} =$ $\left[\Rule{0pt}{2.4em}{0pt}\right.$$\left]\Rule{0pt}{2.4em}{0pt}\right.$.