Let $$\vec{v}_1 = \left[\begin{array}{c} -3\cr 4\cr -3 \end{array}\right], \ \ \ \ \vec{v}_2 = \left[\begin{array}{c} -6\cr 11\cr -9 \end{array}\right], \ \ \ \ \vec{y} = \left[\begin{array}{c} 0\cr -3\cr h\cr \end{array}\right].$$
For what value of $h$ is $\vec{y}$ in the plane spanned by $\vec{v}_1$ and $\vec{v}_2$?
$h =$