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Math Help - Clarification on this function

  1. #1
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    Clarification on this function

    I'm trying to draw the graph of the function f(x)=(x-4)^{\frac{2}{3}} and I'm a little confused. Firstly, is the y-intercept:

    =(-4)^{\frac{2}{3}}
    =16^{\frac{1}{3}}?

    Because when I entered this function into an online graphing calculator, it showed the graph only existing on x>4. I also tried inputting it on WolframAlpha and got to a completely different graph: http://www.wolframalpha.com/input/?i=(x-4)^(2/3)
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  2. #2
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  3. #3
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    Thanks! So was I right about the y-intercept? Because the graphs on both the online graphing calculator and Wolfram were different.
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  4. #4
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    you need to get a graphing calculator or download this free grapher ...

    Graph
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  5. #5
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    TI-84 graph ...
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