y>=0, what is the value of X? 1) |x-3|>=y 2)

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y>=0, what is the value of X? 1) |x-3|>=y 2) [#permalink]

30 Nov 2008, 10:21

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y>=0, what is the value of X?

1) |x-3|>=y
2) |x-3|=<-y

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Re: DS inequality [#permalink]

30 Nov 2008, 11:07

Rice wrote:

y>=0, what is the value of X?

1) |x-3|>=y
2) |x-3|=<-y

i get B

we know that modulus is alway positive, so at most RHS is 0..we know y is Positive or 0..the only way this can hold is if y=0

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Re: DS inequality [#permalink]

30 Nov 2008, 20:37

I get E

If you simply both the statements are same

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Re: DS inequality [#permalink]

30 Nov 2008, 22:25

Agree with B.

The key here is to understand that since y>=0, -y will be negative
and that absoulte value can not be -ve.

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Re: DS inequality [#permalink]

03 Dec 2008, 19:02

I understand that Y needs to be equal to 0 but I'm not sure why the answer is B only. Would somebody please explain further? Is it because the - in front of y tells us that y must equal 0 while A doesn't provide that information? I guess it is....

Re: DS inequality [#permalink] 03 Dec 2008, 19:02

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y>=0, what is the value of X? 1) |x-3|>=y 2)

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y>=0, what is the value of X? 1) |x-3|>=y 2)

y>=0, what is the value of X? 1) |x-3|>=y 2)

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