Source: Official Guide Revised GRE 2nd Ed. Part 9; Section 5; #24

2

If x y 0 , which of the following

If x y 0 , which of the following inequalities must be true? y + 1 x, y - 1 x,xy x, xy y, xy x

2 Explanations

1

Vishnu Vasanth Radja

If x = -1/2 and y = -1/4; The option B (y-1 < x) works perfectly. Why are't these values considered.

May 23, 2015 • Comment

Jonathan , Magoosh Tutor

Vishnu, remember that the question is asking which MUST be true. You are correct that (B) is true for those particular values. But, for other values of x and y, (B) is not true. For example, if x = -5, and y = -1, then (B) is NOT true. The correct answer is true for ALL valid values of x and y. (E) is the only answer choice.

Jun 15, 2015 • Reply

1

Gravatar Chris Lele, Magoosh Tutor

Dec 8, 2012 • Comment

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