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Monday, May 4, 2009
Problem 25 - GMAT Coordinate Geometry
In a rectangular coordinate system, if a and b are positive integers, is point (a, b) above line y = x?
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Answer C
ReplyDeleteIt is B.
ReplyDelete(2) b is not equal to a, so it doesn't lie on y = x
B
ReplyDeleteLying above x=y means y>=x must be true. Therefore, B is sufficient as it satisfies the condition for all positive values of x and y.
ReplyDelete