---
id: 699e855e8f18cf77dfce5c22
title: Parabolas - Vertex, Focus, Directrix
challengeType: 11
videoId: fAXpgprNFq0
dashedName: parabolas-vertex-focus-directrix
---

# --description--

In this video, you will learn about special forms for equations of parabolas, and how to find the vertex, focus, and directrix of a parabola.

# --questions--

## --text--

Which of the following is a valid form for the equation of a parabola?

## --answers--

$x - h = 4p(y - k)^2$

---

$y^2 - k^2 = 4p(x - h)$

---

$(y - k)^2 = 4p(x - h)$

---

$y - k = 4p(x - h)^2$

## --video-solution--

3

