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In a rectangular coordinate system, does the line K

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Manager
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In a rectangular coordinate system, does the line K [#permalink]

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New post 11 Oct 2008, 00:15
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In a rectangular coordinate system, does the line K intersect quadrant 2?
a. the slope of k is -1/6
b. the y intercept of k is -6

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Re: OG DS 2 [#permalink]

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New post 12 Oct 2008, 00:25
A.
st1)whenever slope of a line is negative it definitley cross Quad 2.
st2) y=-6 then if slope = - "YES", if slope= +. "May NOT"
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Re: OG DS 2 [#permalink]

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New post 12 Oct 2008, 04:01
UMB wrote:
A.
whenever slope of a line is negative it definitley cross Quad 2.


Is this a rule ? :stupid2

Thanks :)
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Re: OG DS 2 [#permalink]

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New post 12 Oct 2008, 12:20
UMB wrote:
A.
st1)whenever slope of a line is negative it definitley cross Quad 2.
st2) y=-6 then if slope = - "YES", if slope= +. "May NOT"


IMO A



Hence 1) is SUFFICIENT
2) this does not help without knowing slope!!

IMO A
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Re: OG DS 2 [#permalink]

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New post 12 Oct 2008, 19:03
Are there other rules like this? I hate these slope questions, I really don't know how to attack them
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Re: OG DS 2 [#permalink]

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New post 13 Oct 2008, 00:13
redbeanaddict wrote:
Are there other rules like this? I hate these slope questions, I really don't know how to attack them

Slope is nothing but angle with x axis ,when its negative it means the angle is > 90 deg

hence the line must pass through 2nd quadrant initially i was confused whether the line will pass through 4th quad or 2nd but since there are no range of values of x and y on line it passes throgh both quads !!!

I hope this helps !!!Always imagine lines on graph for such questions !!this does help rather than values and solving !!!

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To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

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Re: OG DS 2   [#permalink] 13 Oct 2008, 00:13
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In a rectangular coordinate system, does the line K

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