Write a equation for a parabola with a focus at (-2,5) and a directrix at x=3

Answer 1

This is horizontal parabola: (y - 5)² = 4p(x + 2); p is distance ftom vertex to directrix, so p = - (3 - (- 2)) = -5.

So, (y - 5)² = - 20(x + 2) is desierd equation