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Kimberly77
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If ab0 and points (-a, b) and (-b, a) are in the same quadrant of the 07 Dec 2022, 04:22
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BrentGMATPrepNow
Kimberly77
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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


ThatDudeKnows BrentGMATPrepNow ScottTargetTestPrep could you kindly share your insights on this question please? Is - sign in (-a, b) and (-b, a) relevant here at all? Thanks for your time in advanced.

Useful property: -k = (-1)(k)
So you can read -b as (-1)(b), and -a as (-1)(a)
Does that help?
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Thanks BrentGMATPrepNow. Still find it confused with this sign of a,b and x,y here.
Could you share your usual simple straightforward way of solving this type of question? Thanks Brent
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If ab0 and points (-a, b) and (-b, a) are in the same quadrant of the 19 Dec 2025, 10:16
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