In the rectangular coordinate system, does line k intersect : DS Archive
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# In the rectangular coordinate system, does line k intersect

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Director
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In the rectangular coordinate system, does line k intersect [#permalink]

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25 Feb 2006, 05:47
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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
Director
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25 Feb 2006, 08:12
Professor wrote:
A.

Manager
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25 Feb 2006, 16:43
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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25 Feb 2006, 18:26
Edited: Yes A it. I did a silly mistake thats why initially I was thinking C.
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SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

Last edited by ps_dahiya on 25 Feb 2006, 22:11, edited 1 time in total.
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25 Feb 2006, 21:47
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.
Re: DS # 1   [#permalink] 25 Feb 2006, 21:47
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# In the rectangular coordinate system, does line k intersect

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