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Math Help - Locus and Parabola Question

  1. #1
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    Unhappy Locus and Parabola Question

    I have an assignment, and I'm completely stuck on this one question. Please helpp!

    A parabola has equation 2y^2 = 4x + 8.
    i. Express this equation in the form (y -y1)^2 = 4a(x - x1) [ those 1's were subscripts]

    please help someone, it's probably the easiest question out, so its making me feel dumb right now ><
    Thanksss
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  2. #2
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    Quote Originally Posted by phillipchum View Post
    I have an assignment, and I'm completely stuck on this one question. Please helpp!

    A parabola has equation 2y^2 = 4x + 8.
    i. Express this equation in the form (y -y1)^2 = 4a(x - x1) [ those 1's were subscripts]

    please help someone, it's probably the easiest question out, so its making me feel dumb right now ><
    Thanksss
    2y^2 = 4x + 8

    y^2 = \frac{1}{2}(4x + 8)

    y^2 = 4\cdot \frac{1}{2}(x + 2)

    (y - 0)^2 = 4\cdot \frac{1}{2}[x - (-2)].
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