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prep题不懂~马上就考了~急！
16.
Lines n and p lie in the xy-plane.Is the slope of line n less than the slope of line p ?
(1)Lines n and p intersect at the point (5,1).
(2)The y-intercept of line n is greater than the y-intercept of line p.
答案是C，我想问1+2 怎么能判定呢？两条线有可能在不同的象限啊~~ |
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