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    hopeful103002's Avatar
    hopeful103002 Posts: 1, Reputation: 1
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    #1

    Oct 15, 2009, 01:05 PM
    solving x, y intercepts
    I was wondering if someone can tell me if my answer is correct for this equation.

    20x-y=-20. By substituting x and y for 0 I got the following.

    y=-20 and x=-1 (0,-20) (-1,0)

    Thanks.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Oct 15, 2009, 02:34 PM

    Not quite: the sign for the y intercept is wrong. When x =0, y =+20.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #3

    Oct 17, 2009, 08:34 AM

    Yes, you forgot that -y = -20, so y becomes 20.
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