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GMAT Prep Problem - Lines

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GMAT Prep Problem - Lines

by arbiter » Sat Aug 22, 2009 8:29 am
A line(l) is passing through a point (6,3). All points (x,y) that lie below the line l,satisfy which of the following inequalities?

a> y<2x+3
b> y<-2x+3
c> y<-x+3
d> y<0.5x+3
e> y<-0.5x+3

Pl. give explanations?

OA is E
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I feel

by enniguy » Sat Aug 22, 2009 8:37 pm
I feel that not enough information if provided. It's impossible to form a line with 1 point and I don't know how to comprehend "below".

Please clarify the source.
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Re: I feel

by arbiter » Sat Aug 22, 2009 11:31 pm
Below figure might help![/img]
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by deepak115 » Mon Aug 24, 2009 8:32 am
If you figure is correct then the line doesn't pass through (6,3) but 2 points (0,3) & (6,0)

from that information you can find the slope to be

y = -0.5x + 3

so any point that lie below should be

y < -0.5x + 3
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