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# If x is not equal to 1, then is y equal to zero?

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Manager
Joined: 17 Oct 2016
Posts: 94
Location: India
Concentration: General Management, Healthcare
GMAT 1: 640 Q40 V38
GMAT 2: 680 Q48 V35
GPA: 3.05
WE: Pharmaceuticals (Health Care)
If x is not equal to 1, then is y equal to zero?  [#permalink]

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Updated on: 02 Oct 2017, 20:52
00:00

Difficulty:

35% (medium)

Question Stats:

61% (00:48) correct 39% (00:54) wrong based on 33 sessions

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If x is not equal to 1, then is y equal to zero?

(1) y = 1/(x - 1)

(2) y = x/6

source: NOVA GMAT

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Originally posted by fitzpratik on 02 Oct 2017, 20:46.
Last edited by Bunuel on 02 Oct 2017, 20:52, edited 1 time in total.
Edited the question.
Math Expert
Joined: 02 Sep 2009
Posts: 49206
Re: If x is not equal to 1, then is y equal to zero?  [#permalink]

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02 Oct 2017, 20:55
1
If x is not equal to 1, then is y equal to zero?

(1) y = 1/(x - 1). For a fraction, 1/(x - 1) in our case, to be 0, the numerator must be 0, and we see that it's not, so y is not 0. Sufficient.

(2) y = x/6. If x = 0, the y = 0 but if x is any other number then y ≠ 0. Not sufficient.

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Re: If x is not equal to 1, then is y equal to zero? &nbs [#permalink] 02 Oct 2017, 20:55
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