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Math Help - Graphing help?

  1. #1
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    Jul 2008
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    Graphing help?

    i need some help determining the vertex and the line of symetry of graphs and drawing graphs. i also need help identfying the domain and range for certain functions.

    Y=x^2+3

    Y=-x^2+3x+5

    thank you and God bless.
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  2. #2
    Newbie
    Joined
    May 2008
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    17
    Firstly i hope your name actually isnt michael hunt, that would be a bit unfortunate.

    If you have the equations in turning point form these are easy to find
    turning point form: (x-a)^2+k
    a is the horizontal displacement of the graph from the origin, and k is the vertical displacement. the vertex of a parabola will therefore be at (a,k)
    The line of symmetry will be at x=a
    domain and range is easiest to find once you have graphed the function, you just see the values of x and y for which the graph is defined.
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