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what is xy ?

Expert replies
Source: — Data Sufficiency |

by GmatKiss » Mon Nov 07, 2011 11:59 pm
adi_800 wrote:If 6xy = x2y + 9y, what is the value of xy?

(1) x = -2

(2) x < 0
Is this correct??
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by shankar.ashwin » Tue Nov 08, 2011 12:05 am
D IMO

y * (x-3)^2 = 0

So either y = 0 (or/and) x = 3.

Statement 1:

x = -2, then y should be 0. Hence xy = 0

Statement 2:

x<0, again y should be 0. xy = 0
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by adi_800 » Tue Nov 08, 2011 12:11 am
GmatKiss wrote:
adi_800 wrote:If 6xy = x2y + 9y, what is the value of xy?

(1) x = -2

(2) x < 0
Is this correct??
Updated !! :)
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