问一道比较丢脸的题。。。

rock19840717 · 发表于 2008-9-5 11:13:00

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。。。。

samanthappa · 发表于 2008-9-5 11:14:00

人家问的r,给的是k

rock19840717 · 发表于 2008-9-5 11:19:00

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？

joe_ufoman · 发表于 2008-9-5 11:24:00

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.

samanthappa · 发表于 2008-9-5 11:31:00

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

小圈子 · 发表于 2008-9-5 11:37:00

lz不是抄错题，那个是问号离l太近啦......

samanthappa · 发表于 2008-9-5 11:45:00

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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rock19840717 · 发表于 2008-9-5 12:27:00

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