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    Melzy11's Avatar
    Melzy11 Posts: 7, Reputation: 1
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    #1

    Jun 6, 2007, 11:12 AM
    Algebra Functions
    I am having the most difficult time learning this one. I don't understand how to solve

    f(x). I have the equation I have the equation that goes like this,

    let f(x)=-1/3x + 8
    ------------
    4

    That's the equation, and now it wants to know

    f(-9)
    f (.16)
    and find x if f(x) is 1/4

    I have looked through the book, and back at the explanations given, and I think I am missing something because I don't even know where to begin. Help!! :confused:
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Jun 6, 2007, 11:19 AM
    well f(-9) you just put -9 as x into the equation and do the math and you get the answer.

    for f(x) = 1/4 you substitute 1/4 in the place of f(x) and solve for x (standard algebra manipulation)
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