Which is the axis of symmetry of a parabola with equation y2=-8x? y = –2 y = 0 x = 0 x = 2

Question

asked Dec 27, 2018 141k views

2 Answers

Webkit · Answer 1 · 2019-01-03T11:05:52+0000

Answer:

y=0

Explanation:

we know that

The equation in vertex form of a horizontal parabola is equal to

x=(y-k)^(2) +h

where

(h,k) is the vertex

and the axis of symmetry is the y -coordinate of the vertex

so

y=k

In this problem we have

y^(2)=-8x ----> is a horizontal parabola open to the left

The vertex is the origin

therefore

the equation of the axis of symmetry is equal to

y=0