# How do I find the directrix and focus of a parabola?

##### 1 Answer

Apr 18, 2015

There are two basic kinds of parabola(as it is convenient for me to say)

**Type 1:**

The parabola lying on, or parallel to the

This parabola is of the form

Where,

- focus is

- directrix is the line

- Vertex is

**Type 2:**

The parabola lying on, or parallel to the

This parabola is of the form

Where,

- focus is

- directrix is the line

- Vertex is