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In the rectangular coordinate system shown above, does line

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In the rectangular coordinate system shown above, does line [#permalink]

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New post 10 Mar 2008, 11:46
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

In the rectangular coordinate system shown above, does line K intersect
quadrant II?
(1) The slope of the line is -1/6.
(2) The y-intercept of K is -6.

see figure
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Re: gmatprep coordinate geo [#permalink]

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New post 10 Mar 2008, 16:28
C

You need to know both m, slope and c, y-intercept to place a line (defined by y=mx+c) in the quadrant system.

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New post 15 Mar 2008, 03:03
sreehari wrote:
C

You need to know both m, slope and c, y-intercept to place a line (defined by y=mx+c) in the quadrant system.


OA is A, since slope is negative

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Re: gmatprep coordinate geo [#permalink]

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New post 15 Mar 2008, 07:27
marcodonzelli wrote:
sreehari wrote:
C

You need to know both m, slope and c, y-intercept to place a line (defined by y=mx+c) in the quadrant system.


OA is A, since slope is negative


Aah.. right, it got to cut into second quardrant somewhere!

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Re: gmatprep coordinate geo [#permalink]

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New post 15 Apr 2008, 07:41
With A...Couldn't we have two cases with a negative slope?

Case 1) Goes from Quad 2 --> Quad 4
OR
Case 2) Goes from Quad 3 --> Quad 4 (Sloping Downward)?

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Re: gmatprep coordinate geo [#permalink]

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New post 15 Apr 2008, 11:44
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jimmyjamesdonkey wrote:
With A...Couldn't we have two cases with a negative slope?

Case 1) Goes from Quad 2 --> Quad 4
OR
Case 2) Goes from Quad 3 --> Quad 4 (Sloping Downward)?


Case 2 will still go through quadrant II - it is an infinite line. Negative slope line always goes through quadrants II and IV.
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New post 15 Apr 2008, 12:16
thanks...forgot...infinite!

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New post 15 Apr 2008, 12:43
hi

plsssssssssss

can any one clearly describe the St: 2 pls

thanks
shobuj

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Re: gmatprep coordinate geo [#permalink]

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New post 15 Apr 2008, 21:23
shobuj wrote:
hi

plsssssssssss

can any one clearly describe the St: 2 pls

thanks
shobuj


1. y-interncept of K = -6 and slope of K negative, so k goes DOWNWARD, from II to IV. You can answer the question, yes, K go through II quandrant

2. y-interncept of K = -6 and slope of K possitive, so k goes UPWARD, from III to I quandrant. You can answer the question, NO, K does NOT go throught II quandrant.

So is SO. :lol:
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New post 16 Apr 2008, 04:37
Case 2 will still go through quadrant II - it is an infinite line. Negative slope line always goes through quadrants II and IV.

how can it go because if it intercept in -6 in Y axis then it can only go through 3 and 4

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Re: gmatprep coordinate geo   [#permalink] 16 Apr 2008, 04:37
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In the rectangular coordinate system shown above, does line

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