Question

F(5, 0) is the focus of a parabola whose vertex is

at the origin. Find the equation of its directrix.

Answer 1

Explanation:

vertex (0,0) and focus (5,0) are horizontally aligned, so the directrix is vertical.

Vertex is halfway between focus and directrix. Directrix: x=-5

Answer 2

You can use M a t h w a y . c o m