Answer
See graph
Work Step by Step
$$x=-4y^2$$
The vertex is (0,0).
Substitute y-values to find their corresponding x-values.
$$x=-4(-1)^2$$
$$x=-4$$
$$(-4,-1)$$
$$x=-4(1)^2$$
$$x=-4$$
$$(-4,1)$$
Plot these points on a graph and connect with a smooth curve.