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Math Help - Find the vertex of the parabola. Sketch the graph: y=-x^2+2x-3

  1. #1
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    Find the vertex of the parabola. Sketch the graph: y=-x^2+2x-3

    Find the vertex of the parabola. Sketch the graph: y=-x^2+2x-3
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  2. #2
    MHF Contributor Unknown008's Avatar
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    The easiest way, I believe for this problem is that you first complete the square, ie get it in the form of y = a(x-b)^2 +c

    Then (b, c) becomes your vertex and you can easily sketch the graph, by looking for the appropriate intercepts.
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  3. #3
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    or maybe (b,-c), but that is the idea.

    You never will find the vertex of the parabola unless you make some effort. I seriously doubt this problem dropped out of the sky and hit you on the head. I am almost certain there was a lecture or a section in book right before you encountered this problem. There was that Algebra I class, however long ago, where you discussed "Completing the Square". All these things can work for your good.
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