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

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Joined: 17 Oct 2016
Posts: 82

Kudos [?]: 37 [0], given: 17

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

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New post 02 Oct 2017, 20:46
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  35% (medium)

Question Stats:

64% (00:43) correct 36% (00:49) wrong based on 28 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
[Reveal] Spoiler: OA

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Last edited by Bunuel on 02 Oct 2017, 20:52, edited 1 time in total.
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Kudos [?]: 37 [0], given: 17

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Re: If x is not equal to 1, then is y equal to zero? [#permalink]

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New post 02 Oct 2017, 20:55
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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.

Answer: A.
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Kudos [?]: 132595 [1], given: 12326

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