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Coordinate Geometry

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Source: — Data Sufficiency |
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by cans » Sat Jun 04, 2011 10:17 pm
a)m=-1/6 (m is slope)
as m<0, as x decreases, y increases. As x tends towards -infinity, y tends towards +infinity. Which is in 2nd quadrant
Sufficient.
b)y-intercept is -6.
can intersect 2nd quadrant but not sure. (y=x-6 (doesn't intersect))
y=-x-6 intersects
Insufficient
IMO A
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by vzzai » Sat Jun 04, 2011 10:32 pm
IMHO A.

1) -ve slopes would go through quad 2 & 4.
2) cant deduce slope from the given info...
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by Cheers123 » Sat Jun 04, 2011 10:47 pm
Thanks guys!
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by vikram4689 » Sun Jun 05, 2011 3:30 am
This is is related to ascending and descending line. You may only learn the following

Any line with -ve slope has to pass through 2 & 4th quadrant (descending line)
Any line with +ve slope has to pass through 1 & 3rd quadrant (ascending line)
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