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# In the rectangular coordinate system, does line k intersect

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Director
Joined: 06 Feb 2006
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In the rectangular coordinate system, does line k intersect [#permalink]

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25 Feb 2006, 06:47
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In the rectangular coordinate system, does line k intersect quadrant II?

1) the slope of k is -1/6
2) the y intercept of k is -6

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Director
Joined: 06 Feb 2006
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25 Feb 2006, 09:12
Professor wrote:
A.

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Manager
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25 Feb 2006, 17:43
It is A. Construct the equation of the line in each case and substitute values for all variables and see if a condition x <= 0 and y > 0 is possible. If it is possible, then the line passes through second quadrant.
(1) Line equation: y = (-x/6) + c
(2) Line equation: y = mx - 6

(Equation of line is y = mx+c)

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CEO
Joined: 20 Nov 2005
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Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008

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25 Feb 2006, 19:26
Edited: Yes A it. I did a silly mistake thats why initially I was thinking C.
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

Last edited by ps_dahiya on 25 Feb 2006, 23:11, edited 1 time in total.

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VP
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25 Feb 2006, 22:47
SimaQ wrote:
Professor wrote:
A.

any line with -ve slop has downward movement from left to right. so it you extend this line, at some point it passes through (II) quadrant.

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Re: DS # 1   [#permalink] 25 Feb 2006, 22:47
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