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Math Help - help been on holiday

  1. #1
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    help been on holiday

    I'm doing math homework and have been away and just came back so missed a few lessons. I have homework to do and dont know how do do the following

    Draw the graph y=3x -1
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  2. #2
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    e^(i*pi)'s Avatar
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    Quote Originally Posted by mitchnufc View Post
    I'm doing math homework and have been away and just came back so missed a few lessons. I have homework to do and dont know how do do the following

    Draw the graph y=3x -1
    1) Pick 3 points and plot their values - the resulting line will go through all of them and be the right line

    f(x) = 3x-1

    f(-1) = -4
    f(0) = -1
    f(1) = 2


    2) Start with f(0) and find that [f(0) = -1]. From there go up 3 for every 1 to the right and down 3 for every one to the left
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  3. #3
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    Thanks

    Thanks for the quick reply I am still totally lost on these graphs for some reason when i normally get most things straight away.
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  4. #4
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    Quote Originally Posted by mitchnufc View Post
    Thanks for the quick reply I am still totally lost on these graphs for some reason when i normally get most things straight away.
    go to the link and make up the lessons you missed.

    http://www.purplemath.com/modules/graphlin.htm
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