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Math Help - a little help

  1. #1
    Newbie
    Joined
    May 2008
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    6

    a little help

    i have a few problems i need help with

    graph each equation by writing two linear equations


    1. y=abs(3x+6)

    2. y= 3/2abs(3x-1)


    i dont know how to turn them into linear equations
    Last edited by zachi2; July 17th 2008 at 08:29 AM.
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  2. #2
    Newbie
    Joined
    Jul 2008
    Posts
    16
    y = abs(3x+6)

    3x+6=0 when x=-2

    it will be negative when x<-2 and positeve when x>-2

    -1 times a negative gets it positive again. The absolute value is like a -1 that only applies to the negative part.

    So up to -2 on the x axis, graph -(3x+6) which is -3x-6.

    After -2 on the x axis, graph 3x+6

    the next problem is basically the same thing, just multiply by -1.5 instead of -1.
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