In the xy-plane, what is the slope of line l? : DS Archive
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# In the xy-plane, what is the slope of line l?

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In the xy-plane, what is the slope of line l? [#permalink]

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04 Jun 2007, 08:24
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Q34:
In the xy-plane, what is the slope of line l?
(1) Line l dose not intersect the line with equation y = 1 - x.
(2) Line l intersects the line with equation y = x – 1.
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04 Jun 2007, 09:58
In this ques.
(1) says l doesn't intersect x+y=1 this means l is parallel to x+y=1 which implies that slope should be -1 (same as of x+y=1)
(2) says l intersect l so l can be anywhere intersecting l so we can't get a unique answer
so we can determine slope of l by statement first alone.
What is the correct ans.?
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Re: DS - XY plan [#permalink]

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04 Jun 2007, 18:25
jet1445 wrote:
Q34:
In the xy-plane, what is the slope of line l?
(1) Line l dose not intersect the line with equation y = 1 - x.
(2) Line l intersects the line with equation y = x – 1.

A should be the answer.

(1) tells that line is parallel, thus same slope.

(2) can have any slope and can intersect at any angle!

Thus A
Re: DS - XY plan   [#permalink] 04 Jun 2007, 18:25
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# In the xy-plane, what is the slope of line l?

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