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Math Help - Finding the focus and directrix of a parabola?

  1. #1
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    Finding the focus and directrix of a parabola?

    How do you find the focus and directrix of a parabola when given an equation in X^2=4PY form?
    EX) Find the focus and directrix of the parabola 10Y=7X^2
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  2. #2
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    Read this Math Forum - Ask Dr. Math

    You might need to make your equation 10y=7x^2 \implies 7x^2=10y \implies x^2=\frac{10}{7}y\implies x^2=4\frac{10}{28}y
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