# How do you find the equation of a parabola with vertex at the origin and directrix y=-1?

##### 1 Answer

Sep 2, 2017

**Equation of parabola is**

#### Explanation:

Vertex is at

Equation of parabola is

so parabola opens upward and

directrix from vertex is

graph{1/4 x^2 [-12.66, 12.65, -6.33, 6.33]} [Ans]