### Question Description

using the distance formula what's the equation of a parabola with its focus at (0,7) and directrix at y=-7

## Explanation & Answer

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**This is an equation of a parabola that opens left with vertex at origin.Its basic form of equation: y^2=-4pxFor given parabola:vertex:(0,0)axis of symmetry: y=0 p=7 (distance from vertex to directrix and focus on the axis of symmetry)4p=28**

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