Find the value(s) of h for which the vectors are linearly dependent. Justify each answer.

$$\left[\begin{array}{c}1\\ 5\\ -3\end{array}\right],\left[\begin{array}{c}-2\\ -9\\ 6\end{array}\right],\left[\begin{array}{c}3\\ h\\ -9\end{array}\right]$$