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In the rectangular coordinate system, are the points (r,s)..

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Source: — Data Sufficiency |
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IMO

by kc_raj » Tue Jul 07, 2009 6:08 am
IMO it should be E

A, B do not tell anything about the distance from the origin,

combined together also do not tell anything about distance

r+s=1, r, s=1/2 will have distance of (1/2)^0.5

u+v=1, u=3/4, v=1/2 will have distance of (13/16)^0.5 different

or if u,v=1/2 then same distance. so cannot tell
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by mike22629 » Tue Jul 07, 2009 8:13 am
Basically it is asking you if sq rt of (r^2 + s^2) = sq rt of (u^2 + v^2)
(Pythagoreom Thereom)

You need both to answer question.

C.
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by alexdallas » Tue Jul 07, 2009 8:26 am
thanks Mike, ure right.
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