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Mathematics 21 Online
OpenStudy (anonymous):

Find the standard form of the equation of the parabola with a focus at (0, -10) and a directrix at y = 10.

OpenStudy (anonymous):

YAY!!!!!1

OpenStudy (anonymous):

MORE OF THIS!!!!! :D Okay, so the basic formula is: \[y= (1/4p) x^2\]

OpenStudy (anonymous):

So, we know the focus is (0,p) and the directrix is y=-p Use the information to create your equation: \[y= 1/4(-10) \times x^2\]

OpenStudy (anonymous):

Does that help?

OpenStudy (anonymous):

Yes.

OpenStudy (anonymous):

Okay! If you need anymore help/ deeper explanation, send me a message! I <3 this topic!

OpenStudy (anonymous):

I'll do that.

OpenStudy (misty1212):

HI!!

OpenStudy (misty1212):

you need the vertex do you know it?

OpenStudy (anonymous):

I don't believe I need the vertex.

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