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by moneyman » Sat Sep 01, 2007 5:59 am
Lines n and p lie in the xy plane.Is the slope on n less than slope of p??

(1)Lines n and p intersect at the point (5,1)
(2)The y intercept of line n is greater than y intercept of line p.
Maxx
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by agps » Sat Sep 01, 2007 7:00 am
1) is clearly insufficient
2) y intercept means x=0, this means n has a greater value of b (y=mx+b) that p by itself issuficient

C is the answer, because if b is greater in n than in p and they inetrcept after that, either m is negative for line n or the value of m (slope) is greater in line p than in line n, or else they would not intercept later on.
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by moneyman » Sun Sep 02, 2007 6:24 am
If u dont mind can u pls explain it in a easier way
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Re: Testprep8

by jaspreet.sharma » Tue Sep 04, 2007 3:13 pm
moneyman wrote:Lines n and p lie in the xy plane.Is the slope on n less than slope of p??

(1)Lines n and p intersect at the point (5,1)
(2)The y intercept of line n is greater than y intercept of line p.



1 -> N and P intersect at (5,1)…..not sufficient to know the answer

2-> when x=0, the value of y is greater for N
Take an eg
N=(0,5)
P=(0,2)
5>2 is implied by 2nd stmt

slope = y/x

for N slope = 5/5 =1 pts taken are (0,5) and (5,1)
for P slope = 2/5 = .4 pts taken are (0,2) and (5,1)

so slope of N is greater than slope of P.

i hope now u got the soln :)
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