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    chellbell's Avatar
    chellbell Posts: 3, Reputation: 1
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    #1

    Dec 6, 2007, 03:55 PM
    identifying parallel lines?
    how do you identify which lines are parallel?
    ex. x=7;y=-5/6x+8;y=-5/6x-4;x=-9
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Dec 6, 2007, 04:04 PM
    Parallel lines have the same gradient. Does that help you at all? I can't say much more without giving it away :)

    You should know how to identify the gradient from what you have been taught in class.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #3

    Dec 7, 2007, 11:32 AM
    Quote Originally Posted by Capuchin
    parallel lines have the same gradient.
    In the US we call it "slope." Parallel lines have the same slope. The general form of a line is y = mx+b, where m is the slope and b is the y-intercept point. You should be able to do these problems now.
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