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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote Gmat Prep question 2 This topic has 8 member replies Gmat Prep question 2 Q. In the xy plane, what is the y intercept of Line L 1. The slope of line L is 3 times its y intercept 2. the x intercept of line L is -1/3 _________________ When the going gets tough, the tough gets going. Legendary Member Joined 08 Jul 2008 Posted: 661 messages Upvotes: 48 Would say E. Is it the answer? Senior | Next Rank: 100 Posts Joined 11 Jul 2008 Posted: 58 messages Upvotes: 4 Test Date: 8/16/2008 Target GMAT Score: 730+ I think it is E 1) Y=3m(x)+m - doesn't allow us to conclude one value for m. - INSUFFICIENT 2) no slope given - INSUFFICIENT Together statement 2) doesn't provide incremental information (see below) to statement 1, still insufficient. If we look for X intercept using just statement 1) we find: 0=3mx+m x=-1/3 So no new information with statement 2 Master | Next Rank: 500 Posts Joined 15 Mar 2008 Posted: 102 messages Upvotes: 4 What if we were given explicity that the slope is positive (or that its negative) Would that be of any help ? Senior | Next Rank: 100 Posts Joined 11 Jul 2008 Posted: 58 messages Upvotes: 4 Test Date: 8/16/2008 Target GMAT Score: 730+ I don't think knowing just the sign alone would help. If I understand the problem correctly we need the direction and the magnitude to help us extrapolate the Y intercept based on the information provided in statement 1. As for statement 2, knowing the direction alone still provides an infinite number of possibilities for lines that we can draw from an x-intercept of -1/3. Senior | Next Rank: 100 Posts Joined 19 Jun 2008 Posted: 38 messages Target GMAT Score: 720 I think the answer is C... From statement 1 y=3m(x)+m From statement 2 x=-1/3 So y=-m+m =o; hence y=0 means it is the x axis itself....x axis has got a slope of zero...Hence answer C Legendary Member Joined 08 Jul 2008 Posted: 661 messages Upvotes: 48 There is an infinity of lines. Senior | Next Rank: 100 Posts Joined 11 Jul 2008 Posted: 58 messages Upvotes: 4 Test Date: 8/16/2008 Target GMAT Score: 730+ Microke- I don't think x=-1/3 and x-intercept = -1/3 are equivalent statements. So I'm not clear on the substitution. Am I wrong on this? Senior | Next Rank: 100 Posts Joined 19 Jun 2008 Posted: 38 messages Target GMAT Score: 720 Canman, I think one can assume x intercept as the point crossing x axis , that is at x=-1/3 when the assumed straight line is of form y=mx+c... I am also not so confident, what is the OA? • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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