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If ab≠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
OA C
Source: GMAT Prep
(1) xy > 0
(2) ax > 0
OA C
Source: GMAT Prep
