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# In the xy-plane, what is the slope of line l? (1) Line l

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Manager
Joined: 17 Apr 2009
Posts: 141
In the xy-plane, what is the slope of line l? (1) Line l [#permalink]

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20 Jul 2009, 02:32
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In the xy-plane, what is the slope of line l?
(1) Line l dose not intersect the line with equation y = 1 - x.
(2) Line l intersects the line with equation y = x – 1.

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Senior Manager
Joined: 23 Jun 2009
Posts: 355
Location: Turkey
Schools: UPenn, UMich, HKS, UCB, Chicago

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20 Jul 2009, 02:47
A
1 suff. It means that line l is parallel to line with equation y = 1 - x. So slope is -1
2 in suff. We can not find slope.

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If you would like to discuss this question please re-post it in the respective forum. Thank you!

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Re: DS doubt   [#permalink] 20 Jul 2009, 02:47
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