# What is the equation in standard form of the parabola with a focus at (-1,18) and a directrix of y= 19?

##### 1 Answer

Feb 8, 2017

#### Explanation:

Parabola is the locus of a point, say **focus** and from a given line called **directrix** , is always equal.

Further, standard form of equation of a parabola is

As focus is

and distance of

Hence equation of parabola is

or

or

or

or

graph{(2y+x^2+2x)(y-19)=0 [-20, 20, -40, 40]}