原题是 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. 作者给的答案是C。 我有点想不明白TAT。 1.2条件加起来,当两条线截距均为正时,n的斜率大于p的斜率。但是题目问的是is the slope of n less than the slope of p?答案是不less啊。我昏了,麻烦高人指点!!诚谢!!