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Lines k and m are parallel to each other. Is the slope of

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Lines k and m are parallel to each other. Is the slope of [#permalink] New post 05 Sep 2010, 05:55
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93% (01:42) correct 7% (01:13) wrong based on 28 sessions
Lines k and m are parallel to each other. Is the slope of line k positive?

(1) Line k passes through the point (3, 2).
(2) Line m passes through the point (-3, 2).
[Reveal] Spoiler: OA
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Re: Slope of one of the parallel lines [#permalink] New post 05 Sep 2010, 06:14
Expert's post
Orange08 wrote:
Lines k and m are parallel to each other. Is the slope of line k positive?
(1) Line k passes through the point (3, 2).
(2) Line m passes through the point (-3, 2).


It's straight E.

The best way is to solve this problem is to visualize it. We have the line k, which passes through the point (3, 2) and its parallel line m, which passes through the point (-3,2). If you draw one such pair and fix, then you can rotate them 360 degrees to get infinite number of line with negative as well positive slopes.

Answer: E.

For more on this issue please check Coordinate Geometry chapter of Math Book (link in my signature).

Hope it helps.

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Re: Slope of one of the parallel lines [#permalink] New post 07 Sep 2010, 22:20
This is more than eazy
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Re: Slope of one of the parallel lines [#permalink] New post 08 Sep 2010, 09:13
Orange08 wrote:
Lines k and m are parallel to each other. Is the slope of line k positive?
(1) Line k passes through the point (3, 2).
(2) Line m passes through the point (-3, 2).


To find a slope we need at least 2 points on a line. Here only one point is given for each line.
Re: Slope of one of the parallel lines   [#permalink] 08 Sep 2010, 09:13
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Lines k and m are parallel to each other. Is the slope of

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