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What is the value of y? (1) 3|x2 4| = y 2 (2) |3 y| = 11

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Senior Manager
Senior Manager
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Joined: 19 Mar 2008
Posts: 345
What is the value of y? (1) 3|x2 4| = y 2 (2) |3 y| = 11 [#permalink]

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New post 26 Jul 2008, 00:47
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A
B
C
D
E

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What is the value of y?

(1) 3|x2 – 4| = y – 2

(2) |3 – y| = 11

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

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Manager
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Joined: 27 May 2008
Posts: 137
Re: DS: Absolute value 3 (n3.19) [#permalink]

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New post 26 Jul 2008, 07:07
judokan wrote:
What is the value of y?

(1) 3|x2 – 4| = y – 2

(2) |3 – y| = 11




From (1)

A definite value of Y can not be determined. For different values of x, y will have different values. But for any value of x, Y has a positive value.

From (2)

y can have two values -8 or 14. Thus no definite answer.

Combining (1) and (2)

Y will be +14

Thus C.
Senior Manager
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Posts: 345
Re: DS: Absolute value 3 (n3.19) [#permalink]

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New post 26 Jul 2008, 10:20
haidzz wrote:
can you please explain?

rahulgoyal1986 wrote:
judokan wrote:
What is the value of y?

(1) 3|x2 – 4| = y – 2

(2) |3 – y| = 11




From (1)

A definite value of Y can not be determined. For different values of x, y will have different values. But for any value of x, Y has a positive value.

From (2)

y can have two values -8 or 14. Thus no definite answer.

Combining (1) and (2)

Y will be +14

Thus C.


Correct. OA is C

Hi haidzz, which part confuses you?

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

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: DS: Absolute value 3 (n3.19)   [#permalink] 26 Jul 2008, 10:20
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What is the value of y? (1) 3|x2 4| = y 2 (2) |3 y| = 11

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