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## Homework Statement

A parabolic communications antenna has a focus 6 feet above its vertex. Write an equation for the parabola and find the width of the antenna 9 feet from the vertex. Locate the origin strategically.

## Homework Equations

y= x^2 (parent equation for parabola)

## The Attempt at a Solution

focus = 4p.

standard form of parabola , (x-h)^2 = 4p(y-k)^2

4 * 6 = 24 so (x-h)^2 = 24(y-k)^2.

It doesn't give you the origin how are you supposed to write the formula?