The focus of a parabola is (0,-1). The directrix is the line y = 0. what is the equation of the parabola in vertex form?

In the equation y = 1/4p (x - k)^2 + h, the value of “p” is __.

The vertex of the parabola is the point ( __ , __ ).

The equation of this parabola in vertex form is y = __ x^2 - 1