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If \(ab\ne 0\) and points \((-a, b)\) and \((-b, a)\) are in the same quadrant of the \(xy\)-plane, is point \((-x, y)\) in the same quadrant?
(1) \(xy > 0\)
(2) \(ax > 0\)
Answer: C
Source: GMAT Prep
(1) \(xy > 0\)
(2) \(ax > 0\)
Answer: C
Source: GMAT Prep
