Question

A parabola is represented by the equation y2 = 5x. Which equation represents the directrix? Y = –20 x = –20 y = Negative five-fourths x = Negative five-fourths

Answer 1

D on edg 2021

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Given

Required

Determine the directrix

First, we express the equation in form:

Where the directrix is:

So, we have:

Rewrite as:

Multiply the right hand side by 4/4

By comparison:

and

The directrix is calculated as:

So: