Question

a parabola has a vertex at the orgin.The focus of the parabola is located at (-2,0).Which is the equation for the directrix related to the parabola?

Answer 1

x=2

Explanation:

or B for ed 2021

Answer 2

The focus is left of the vertex, so the parabola opens to the left. The vertex is halfway between the focus and directrix, so the directrix is the vertical line
x = 2