coordinate s.

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coordinate s.

by mariah » Sun Feb 01, 2009 1:15 pm
35. Is point C has the same distance from point A(-3,-3) and point B(1,-3)?
1). C lies on the line x=-1
2). C lies on the line y=-3

pls explain
Source: — Data Sufficiency |

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by ontopofit » Sun Feb 01, 2009 10:57 pm
IMO A

statement 1) the pt lies on x=-1, any pt on x=-1 will be equidistant from both the pts.
statement 2) the pt. can be anywhere on the line y=-3 (1,-3;2,-3;3,-3) so u cant say if it is closer to A or B.

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by Alara533 » Sun Feb 01, 2009 11:35 pm
I screwed up high time ;)

The answer is A.

As you can see from the attached image, the two points A and B lies equidistant from the line X = -1, so any point in that line will be equidistant from A and B. hence sufficient.

The second part of the image shows the line Y = -3, the first point C1 is closer to point A but another point C2 is closer to point B. Hence not sufficient
Attachments
Coordinates.JPG
Last edited by Alara533 on Mon Feb 02, 2009 10:31 am, edited 2 times in total.

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by yalanand » Mon Feb 02, 2009 4:15 am
A is the right answer..