Find the co-ordinates of the focus, axis of the parabola, equations of the directrix and length of latus rectum of the parabola $x^2=-16y$

Question

$\begin{array}{1 1} (0,-4) \quad \text{y-axis} \quad y=4 \quad 16 \\ (0,4) \quad \text{y-axis} \quad y=4 \quad 8 \\ (0,-4) \quad \text{y-axis} \quad y=2\quad 8 \\ (0,4) \quad \text{x-axis} \quad y=4 \quad 16\end{array} $