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Posted by on Tuesday, June 17, 2014 at 7:00pm.

what is the vertex of y=x^2-4 ??

  • math - , Tuesday, June 17, 2014 at 7:23pm

    x^2 - 4 = y

    x^2 - 4 + (4/2)^2 = y + (4/2)^2

    (x-2)^2 = y + 4
    so
    vertex at (2,-4)

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