can someone PLEASE help me out writing this equation in vertex form?

NetherCraft 0

suppose the parabola has a vertex (4,-6) and also passes through the point (5,-4). write the equation of the parabola in vertex form

Please helpp. Im math dumb :/

4 Answers

  • y = a(x – 4)² – 6

    => -4 = a(5 – 4)² – 6

    => -4 = a – 6

    i.e. a = 2

    so, y = 2(x – 4)² – 6

    :)>

  • You are not dumb. Dumb means you cannot talk.

    You are bright enough to ask for help. I call that SMART.

    Y = A(X – H)² + K

    Vertex = (H , K) = (4 , -6)…………H = 4 and K = – 6

    Point is (X , Y) = (5 , -4)…………X = 5 and Y = – 4

    Now solve for A by substituting in the values of H , K , X , Y

    – 4 = A(5 – 4)² – 6

    +6……………….+6

    2 = A(1)²

    A = 2

    For the final answer replace A , H , K into the original equation

    Y = 2(X – 4)² – 6………………ANSWER

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  • 2(x-4)^2 -6

  • Im sorry, idont knoww the answer to your question, but i just had to comment on your DP pic…omg, jenna marbles LUV HER!!

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