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gmat prep absolute value

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Director
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gmat prep absolute value [#permalink]

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New post 10 Sep 2008, 20:50
see attached

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SVP
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Re: gmat prep absolute value [#permalink]

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New post 10 Sep 2008, 21:42
B.
1: if y = 0, x could be >= 0. so insuff...
2. if lx-3l <= -y, y should be 0 because lx-3l cannot be -ve and y is also not -ve. so y should be 0.
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Director
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Re: gmat prep absolute value [#permalink]

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New post 10 Sep 2008, 22:25
if /x-3/ <= -y, then y has to be -0......no such thing as -0
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Re: gmat prep absolute value [#permalink]

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New post 14 Sep 2008, 05:06
bigtreezl wrote:
see attached

(1)always true for all values of y hence x can take multiple values with diff values of y
(2)does help |x-3|<=-y is true only for y=0 and x=3

IMO B
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Re: gmat prep absolute value [#permalink]

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New post 14 Sep 2008, 13:06
Can we call something whose value is 0, negative?

But Bseems only logical answer. since there are 2 different scenario in 1 and 2 statements, which can correlate only when y=0.
but still negative value of 0 is beyond me

--== Message from GMAT Club Team ==--

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Re: gmat prep absolute value   [#permalink] 14 Sep 2008, 13:06
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