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Math Help - functions help

  1. #1
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    functions help

    heres the problem im really stuck on it...

    it says For Each function, (a) find f(0), (b) solve f(x)=0

    first problem f(x)=3x - 12

    can someone explain the solve f(x) = 0 part...???
    Last edited by CaptainBlack; December 6th 2006 at 10:37 PM. Reason: edited rather than reply ..
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by trippym View Post
    heres the problem im really stuck on it...

    it says For Each function, (a) find f(0), (b) solve f(x)=0

    first problem f(x)=3x - 12

    can someone explain the solve f(x) = 0 part...???

    Solve f(x)=0, means find x such that f(x)=3x-12=0.

    so:

    3x-12=0

    adding 12 to each side gives:

    3x-12+12=12,

    or:

    3x=12,

    so x=4 is the solution of f(x)=3x-12=0.

    RonL
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