Source: Official Guide for GMAT Review 2016 Problem Solving; #44

1

The graph of the equation xy = k

The graph of the equation xy = k, where k < 0, lies in which two of the quadrants shown above?

1 Explanation

1

Jeffrey Braganza

Given xy = k and k is -ve
=> xy = -ve
for xy to be -ve:
i) x is -ve and y is +ve e.g. (-1,1)
ii) x is +ve and y is -ve e.g. (1,-1)

Hence xy lies in quadrant II & IV

Dec 31, 2015 • Comment

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Section 5.3 Problem Solving

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