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标题: 问一道比较丢脸的题。。。 [打印本页]

作者: rock19840717 时间: 2008-9-5 11:13
标题: 问一道比较丢脸的题。。。

Q36:

In the xy-plane, line l and line k intersect at the point (16/5, 12/5). What is the slope of line l?

(1) The product of the slopes of line l and line k is –1.

(2) Line k passes through the origin.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

我选B，为啥要C啊。。。。B不就等于是告诉两个点了么。。。。

作者: samanthappa 时间: 2008-9-5 11:14
人家问的r,给的是k

作者: rock19840717 时间: 2008-9-5 11:19
问的是R啊。。。。。那不是个K嘛。。。。我都K到啥程度了。。。。那R原文没提及啊？

作者: joe_ufoman 时间: 2008-9-5 11:24

以下是引用samanthappa在2008-9-5 11:14:00的发言：
人家问的r,给的是k

This problem is related the two lines of L and K.

作者: samanthappa 时间: 2008-9-5 11:31

晕倒。。。。那个字念k么。。。。

google一下，发现你题抄错了。。应该问的是slope of l

作者: 小圈子 时间: 2008-9-5 11:37
lz不是抄错题，那个是问号离l太近啦......

作者: samanthappa 时间: 2008-9-5 11:45

以下是引用小圈子在2008-9-5 11:37:00的发言：
lz不是抄错题，那个是问号离l太近啦......

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作者: rock19840717 时间: 2008-9-5 12:27
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