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In xy plane, what is the y intercept of line l ? 1) The

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Manager
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In xy plane, what is the y intercept of line l ? 1) The [#permalink]

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New post 25 Nov 2008, 12:30
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In xy plane, what is the y intercept of line l ?

1) The slope of line l is 3 times y intercept.
2) The x intercept of line l is -1/3.
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Re: xy plane (gmat prep question) [#permalink]

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New post 25 Nov 2008, 12:45
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i would go with E..

what is y intercept? i.e when x=0 what is y?

generally we have y=mx+c

1) says m=3c so we y=3cX+c we basically need to find what C is ..

2) says 0=m(-1/3)+C

together we know that 3c(-1/3)+c=0

-c+c=0

we still dont know what C is
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Re: xy plane (gmat prep question) [#permalink]

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New post 27 Nov 2008, 01:30
E again.
both eq lead us to m=3c where y=mx+c.
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Re: xy plane (gmat prep question) [#permalink]

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New post 29 Nov 2008, 06:05
E again 8-) what is OA?
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Re: xy plane (gmat prep question) [#permalink]

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New post 29 Nov 2008, 16:16
prasun84 wrote:
E again.
both eq lead us to m=3c where y=mx+c.


agreed :)
Re: xy plane (gmat prep question)   [#permalink] 29 Nov 2008, 16:16
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