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point (r,s) lies on the line l. Is the line's intercept with

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point (r,s) lies on the line l. Is the line's intercept with [#permalink]  16 Apr 2008, 08:57
point (r,s) lies on the line l. Is the line's intercept with [-axos greater than r?

1) l has a negative slope
2) s<0
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Re: Coordinate geometry [#permalink]  16 Apr 2008, 11:20
puma wrote:
point (r,s) lies on the line l. Is the line's intercept with [-axos greater than r?

1) l has a negative slope
2) s<0

could you repost, is it x- or y-axis???
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Re: Coordinate geometry [#permalink]  16 Apr 2008, 11:36
I would think the answer is C. I'm operating under the assumption that the question says x-axis since r is the x coordinate

(1) Line has negative slope. While this tells us the line is downward sloping, it gives up no information about where (r,s) is. INSUFF

(2) s<0. This gives us no info about the slope.

If positive slope, then r<x-intercept
If negative slope, then r>x-intercept

When you combine 1 and 2, you can see r is always greater than intercept. Thus, C
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Re: Coordinate geometry [#permalink]  16 Apr 2008, 18:05
In reading many of the posts in the geometry and alegebra section, I find the information on the GMAT test regarding the level of math needed to perform at least reasonably is not BASIC algebra and geometry like the GMAT prep book states. It's much more advanced than any BASIC I have ever understood. It will take much more time to learn enough for passing the test with a decent score. Very frustrating.
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Re: Coordinate geometry [#permalink]  16 Apr 2008, 20:25
puma wrote:
point (r,s) lies on the line l. Is the line's intercept with [-axos greater than r?

1) l has a negative slope
2) s<0

yellowjacket wrote:
If negative slope, then r>x-intercept

When you combine 1 and 2, you can see r is always greater than intercept. Thus, C

What do you say if:
(l) y = -2x- 4, this line has x-interncept = -2, and goes thruough (-1,-2)
x-interncept smaller than r!
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Re: Coordinate geometry [#permalink]  17 Apr 2008, 16:34
Question not clear.
Re: Coordinate geometry   [#permalink] 17 Apr 2008, 16:34
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