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Source: — Data Sufficiency |
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by gmatmachoman » Thu Apr 15, 2010 11:58 pm
neoreaves wrote:Lines n and p are on xy plane. Is slope of n less than that of p?
1. Intersect point (5, 1)
2.The Y intercept of line n is greater than that of p

Good question bro!!

IMO C
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by neoreaves » Fri Apr 16, 2010 2:17 am
I think it should be C too .....can you share your solution so i can compare it with my method ?
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by thephoenix » Fri Apr 16, 2010 2:46 am
neoreaves wrote:I think it should be C too .....can you share your solution so i can compare it with my method ?
IMO C
here is my solution
since <p is greter than ,n slope of P is > than N
we need bth statements
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by kstv » Fri Apr 16, 2010 3:41 am
need two points to find the slope of a line
m= y2-y1/x2-x1 so option (C)
if (x1, y1) is (5,1)
the lines pass through the y axis
for line n (0, Y) and p (0, y) where Y > y
slope of p = 1-Y/5 n = 1-y/5
the denominator is same so numerator will influence m

visually (the graph shown in the earlier post)
it is obvious that greater the y intercept , lesser is the x intercept
or steeper is the slope of the line after passing through (5,1)
slope of a line is also = y intercept / x intercept
but the point (5,1) is imp otherwise the x intercepts cannot be compaired.
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by eaakbari » Fri Apr 16, 2010 11:17 am
kstv wrote:need two points to find the slope of a line
m= y2-y1/x2-x1 so option (C)
if (x1, y1) is (5,1)
the lines pass through the y axis
for line n (0, Y) and p (0, y) where Y > y
slope of p = 1-Y/5 n = 1-y/5
the denominator is same so numerator will influence m

visually (the graph shown in the earlier post)
it is obvious that greater the y intercept , lesser is the x intercept
or steeper is the slope of the line after passing through (5,1)
slope of a line is also = y intercept / x intercept
but the point (5,1) is imp otherwise the x intercepts cannot be compaired.
I thought C too, but thats a nice solution.
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