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27 Feb 2011, 07:14
Kudos
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
87% (00:55) correct
13%
(01:11)
wrong
based on 1070
sessions
History
Date
Time
Result
Not Attempted Yet
In the xy- plane, does the point (4, 12) lie on the line K.
(1) The point (1, -7) lies on line K
(2) The point (-2, 2) lies on the line K
(1) The point (1, -7) lies on line K
(2) The point (-2, 2) lies on the line K
a) only with this information that (1,-7) lies on the line we cannot tell whether (4,12) lies on the line k or not -- NS
b) only with this information that (-2,2) lies on the line we cannot tell whether (4,12) lies on the line k or not -- NS
a+b) no point does not lie on K
C
Pls don't blame me that if i know the solution why did i post it....because solution clicked in my mind when i was typing the question.
Thanks
b) only with this information that (-2,2) lies on the line we cannot tell whether (4,12) lies on the line k or not -- NS
a+b) no point does not lie on K
C
Pls don't blame me that if i know the solution why did i post it....because solution clicked in my mind when i was typing the question.
Thanks
27 Feb 2011, 07:58
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GMATD11
You are most welcome to post any questions no matter whether you have a solution for it or not.
As for the problem above: if we knew the exact equation of the line K then we would be able to say whether it passes through the point (4,12). Each statement alone gives us a single point of the line K, hence we cannot get the equation needed, for example the line passing through the point (1,-7) might pass through the point (4,12) as well as NOT pass this point. When taken together we have two distinct points which define the line K thus we can say whether it passes the point (4,12) or not.
Answer: C.
For more check Coordinate Geometry chapter of Math Book: math-coordinate-geometry-87652.html
Hope it helps.
General Discussion
27 Feb 2011, 07:27
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Indeed C. the question can be rephrased as
Can you determine the EQUATION of line K?
Can you determine the EQUATION of line K?
