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-   -   Sketching a graph of a quadratic function (https://www.askmehelpdesk.com/showthread.php?t=411005)

  • Oct 29, 2009, 05:37 PM
    cowgirle
    sketching a graph of a quadratic function
    I need to see a graph sketched with a vertex of (1,-6) and an axis of symmetry of x=1.
    :eek:
  • Oct 29, 2009, 08:05 PM
    Nhatkiem

    The vertex is just the local extrema of your graph, whether in this case it's a maximum or a minimum appears to be up to you. In other words from the point (1,-6), your graph should be parabolic in nature and either decrease or increase exponentially from there.

    as for the axis of symmetry you just need to make sure that
    f(x+n)=y and f(x-n) = y, where n is just some arbitrary value.
  • Oct 29, 2009, 11:58 PM
    Unknown008

    Well, there are actually a number of possibilities. The given axis of symmetry is just to double check your graph.

    The graph can be positive (have a minimum as vertex) or negative (have a maximum as vertex) as well as all the infinite possibilities of the y intercept since no more information is given.

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