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by sud21 » Thu Jan 12, 2012 4:41 am
What is the x-axis intercept of this line L?
1). L passes through point A (0,5)
2). L passes through point A (5,4)
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Source: — Data Sufficiency |
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by avik.ch » Fri Jan 13, 2012 3:49 am
IMO: C
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by ritzzzr » Fri Jan 13, 2012 4:38 am
both statements are required
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by sud21 » Mon Jan 16, 2012 8:12 pm
avik.ch wrote:IMO: C
Can you explain why both are required.
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by shankar.ashwin » Mon Jan 16, 2012 8:22 pm
x- intercept of a line is when the line touches the x-axis when y=0.

Neither choice gives us value of x, when y=0. Hence would not be sufficient alone.


Together, we have 2 points - we can find the equation of the line, sub y=0 and find x. Sufficient. C
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by neelgandham » Tue Jan 17, 2012 3:11 am
Hey Sud - please find attached an image with figures corresponding to the statements

Statement 1) : Top left
Statement 2) : Top right
Statement 1) and 2) combined : Bottom middle
I hope it helps !
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Anil Gandham
Welcome to BEATtheGMAT | Photography | Getting Started | BTG Community rules | MBA Watch
Check out GMAT Prep Now's online course at https://www.gmatprepnow.com/
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by avik.ch » Tue Jan 17, 2012 9:41 pm
sud21 wrote:
avik.ch wrote:IMO: C
Can you explain why both are required.

You can never form any equation of a straight line with only one point. You need atleast two point to create an equation of a straight line.

here we can get the value of X at y=0, only after forming the equation of the line. Hence C.

Hope this helps !!
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