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# lines n and p lie in the xy-plane. is the slope of line n

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Manager
Joined: 05 Jul 2006
Posts: 197
lines n and p lie in the xy-plane. is the slope of line n [#permalink]

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24 Aug 2006, 15:31
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Question Stats:

100% (01:02) correct 0% (00:00) wrong based on 1 sessions

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lines n and p lie in the xy-plane. is the slope of line n less than the slope of line p?

1. lines n and p intersect at the point (5,1)
2. the y-intercept of line n is greater than the y-intercept of line p.
Director
Joined: 06 May 2006
Posts: 791

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24 Aug 2006, 15:55

1) Fixes quadrant of intersection. However, insufficient alone.
2) Fixes the slopes of the lines once the point of intersection is defined. Insufficient alone.

However, both taken together will give you the answer.
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Uh uh. I know what you're thinking. "Is the answer A, B, C, D or E?" Well to tell you the truth in all this excitement I kinda lost track myself. But you've gotta ask yourself one question: "Do I feel lucky?" Well, do ya, punk?

Manager
Joined: 25 May 2006
Posts: 227

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24 Aug 2006, 16:07
Getting C

ST1: Insuff
ST2: Insuff

Together: Suff.
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Who is John Galt?

Senior Manager
Joined: 05 Mar 2006
Posts: 348

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24 Aug 2006, 19:08
Another C, if Y-Int of n is greater then that of p, then slop of line n is less then p.
Senior Manager
Joined: 11 May 2006
Posts: 258

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24 Aug 2006, 23:30
from 1,
for line n,

5 = m1 + c1 = > m1 = 5 - c1

for line p,

5 = m2 + c2 => m2 = 5 - c2

insufficeint.

from 2,
c1 > c2

insufficient.

from 1 and 2

m2> m1 hence C
24 Aug 2006, 23:30
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