gmat prep coordinat plane

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by japan1453 » Mon Jan 12, 2009 1:25 pm
OA B

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by arzanr » Mon Jan 12, 2009 1:44 pm
center is (3,2)

3 and 2 have to be the averages of the 3 vertices of the triangle.

therefore, given the vertices (0,0) and (6,0)

(0+6+x)/3 = 3
and
(0+0+y)/3 = 2

solve for x and y, and you will get (3,6)