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Strive_Do IT · 2007 September 12th, 04:34 PM

If X^2 + Y^2 = 1, is X + Y = 1?

(1) XY = 0
(2) Y = 0

Pls provide explanation on how to work this problem out.

Thanks,

2007 September 12th, 04:34 PM	#1 (permalink)
Strive_Do IT Eager! Join Date: Apr 2007 Posts: 93	Is X + Y = 1? If X^2 + Y^2 = 1, is X + Y = 1? (1) XY = 0 (2) Y = 0 Pls provide explanation on how to work this problem out. Thanks,