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Thread: homework question Functions

  1. October 7th 2008, 07:07 AM #1
    civiliam
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    homework question Functions

    It asks to find the domain and range

    f(x) = 3x + 5
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  2. October 7th 2008, 08:48 AM #2
    Greengoblin
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    Domain and range are both real numbers (or could be complex) giving f:\mathbb{R}\to\mathbb{R}

    You should recognise this as the equation of a straight line.
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  3. October 21st 2008, 01:21 PM #3
    CrashPlague
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    so....

    the domain is {x|x∈R}

    and the range is {y|y ≤ 3, y∈R} ?

    'cause I'm also having trouble with this.
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