Pre Calc help

Question

The focus and the directix are:

 

a. Inside the parabola.

b. Related in that the directix is twice the distance from the vertex.

c. Related in that the focus is twice the distance from the vertex.

d. The same distance away from the vertex.

 

Answer 1

The focus and the directix are the same distance away from the vertex.

So option d is the answer.

Answer 2

Graph of vertical parabola.

Graph of horizontal parabola

Therfore, the focus and dirctrix are the same distance away from the vertex.

Option d is correct answer.