DS Problem (Coordinate Geometry)

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Tsadori: Newbie | Next Rank: 10 Posts; Posts: 4; Joined: Thu Nov 16, 2006 11:02 am

by Tsadori » Sun Jan 21, 2007 2:13 pm

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Source: Beat The GMAT — Data Sufficiency | Sun Jan 21, 2007 2:13 pm

Argen: Junior | Next Rank: 30 Posts; Posts: 24; Joined: Sun Jan 07, 2007 6:14 pm; Thanked: 1 times

by Argen » Thu Mar 01, 2007 12:47 pm

From the question we get the condition s=3r+2. We can plug 3r+2 for s into each of the equations and find both equations hold. So the answer should be D.

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Ozlemg: Master | Next Rank: 500 Posts; Posts: 407; Joined: Tue Jan 25, 2011 9:19 amFollowed by: 7 members; Thanked: 25 times

by Ozlemg » Mon Jul 11, 2011 3:18 am

i think the answer is D. could someone elaborate this?

Is this because zero * zero is undefined?

Thanks....

The more you suffer before the test, the less you will do so in the test!

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GMATGuruNY: GMAT Instructor; Posts: 15539; Joined: Tue May 25, 2010 12:04 pmFollowed by: 1906 members; Location: New York, NY; Thanked: 13060 times; GMAT Score:790

by GMATGuruNY » Mon Jul 11, 2011 3:35 am

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