DS Problem (Coordinate Geometry)

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 am; Thanked: 25 times; Followed by:7 members

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 pm; Location: New York, NY; Thanked: 13060 times; Followed by:1906 members; GMAT Score:790

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

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