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Source: — Data Sufficiency |
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by gmattester » Tue Jul 29, 2008 6:09 am
What is the answer.According to me it should be 'D'
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by pranavc » Tue Jul 29, 2008 10:38 am
I am going with D.
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by bha » Wed Jul 30, 2008 6:06 am
Can you guys please explain how u have arrived at 'D'
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by sibbineni » Fri Aug 01, 2008 3:04 am
IMO B
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by Vignesh.4384 » Fri Aug 01, 2008 3:18 am
I think it should be D too
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by raunekk » Fri Aug 01, 2008 4:51 am
i think it shud b "D"


for 1st we get "no" as an answer

for 2nd we get "yes" as answer.
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by mals24 » Fri Aug 01, 2008 12:12 pm
IMO D

(y - y1)= m(x - x1) where m = slope, and (x1,y1) is the coordinate:

Question: m=3/4, (-2/3, 1/2)
y - 1/2 = 3/4 * (x - (-2/3))
y - 1/2 = 3x/4 + 1/2
y = 3x/4 + 1 {This is the base equation to check on (1) and (2)

St (1). Line pass (-4,4)
let x = -4; substitute it in the equation to check if y = 4
y = 3(-4)/4 + 1 = -3+1 = -2 False. Therefore (1) SUFF.

St (2). Line pass (-4,-2)
let x = -4; y = 3(-4)/4 + 1= -3 + 1 = -2 True, Therefor (2) SUFF

Also can you check if the St 1 says (4,4) or (-4,4) because i came across this question before and st 1 had co-ords (4,4). In any case the answer is D.
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by zagcollins » Fri Aug 01, 2008 7:28 pm
the data in the sum is correct...no chgs reqd...
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by pepeprepa » Sat Aug 02, 2008 2:54 am
I agree with D)
1) gives us false
2) gives us true

Don't you find it strange the 2 sentences are contradictory?
I think that it is a rule in DS that there is only one solution to the question.
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