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triangle area

by canuckclint » Sun Sep 14, 2008 12:46 pm
If the line k has x-intercept 4 and positive slope and
If the area formed by the link k and the y axis has area 12,
What is the y-intercept?
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by parallel_chase » Sun Sep 14, 2008 1:07 pm
if x intercept is positive i.e. 4 and slope is also positive, y intercept has to be negative.

base = 4

area = 12 = 1/2 * b * h

4*1/2*h = 12

h= 6

therefore the y intercept is -6.

Whats the answer.
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by mals24 » Sun Sep 14, 2008 1:09 pm
the ques has be solved before check the foll link:

https://www.beatthegmat.com/gmatprep2-sl ... xis%20area
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by Sunny22uk » Sun Sep 14, 2008 1:15 pm
I agree with parallel. same approach.what's the OA
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by niraj_a » Tue Sep 16, 2008 8:44 am
@parallel_chase -

does that opposing rule you mention always hold true? in what cases what the X and Y coordinates have the same sign? Maybe when the slope is negative?
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