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    nadsoflee's Avatar
    nadsoflee Posts: 1, Reputation: 1
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    #1

    Apr 20, 2010, 12:47 PM
    Find an equation for the parabola with focus at(-3,-8) and vertex at (-3,-4).
    I need to know how I find an equation for this problem. How do these numbers plug into (x-h)^2=4p(y-k)?
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Apr 21, 2010, 02:24 AM

    p is the (absolute value) distance from the focus to the vertex. You can find that from the given coordinates.
    (h,k) are the vertex coordinates.

    Plug them in.
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