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Write an equation: vertex at (1,-3) and Focus (1,-5)

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The vertex and focus points are image

Find an equation.

Since the image-coordinates of the vertex and focus are the same, this is a regular vertical parabola.

Since the vertex and focus are image

Standard form of the parabola equation is image

Substitute image in the parabola equation.

image

The parabola equation is image

answered Jan 12 by Anney Mentor

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