GMAT PREP XY Coordinate

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GMAT PREP XY Coordinate

by pkw209 » Wed Jan 20, 2010 4:39 pm
Hi,

I've seen a few explanations for this problem but none are clear to me. Answer is C. Thanks!

159) In xy coordinate plane, line l and line k intersect at point (4, 3). Is product of the slopes negative?

a. Product of x intercepts of lines l and k is positive
b. Product of y intercepts of lines l and k is negative
Source: — Data Sufficiency |

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by Testluv » Wed Jan 20, 2010 6:31 pm
Hi Peter,

I discussed this question here:

https://www.beatthegmat.com/gprep-co-ord ... 48136.html

If you require further clarification, then please post your question(s) in that thread.

Thanks.
Kaplan Teacher in Toronto

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by pkw209 » Fri Jan 29, 2010 1:25 pm
Can someone please explain this problem conceptually?