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05 Jan 2013, 21:41
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
53% (01:21) correct
47%
(01:25)
wrong
based on 150
sessions
History
Date
Time
Result
Not Attempted Yet
Attachment:
screen_shot_cordinate_geometry.png [ 41.68 KiB | Viewed 4129 times ]
What are the equations of the two parallel lines shown here?
(1) Point A has coordinates (0,2)
(2) Point B has coordinates (-3,0)
Why not C?
Using Point A and B, equation of line joining both points can be found, finally slope ( say m)
We know that line is perpendicular with those parallel lines. (So slope of these lines will be -1/m)
Using one Point A and slope (-1/m) we can derive equation
Like wise, Point B can be done.
Using Point A and B, equation of line joining both points can be found, finally slope ( say m)
We know that line is perpendicular with those parallel lines. (So slope of these lines will be -1/m)
Using one Point A and slope (-1/m) we can derive equation
Like wise, Point B can be done.
Please explain
05 Jan 2013, 22:22
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shanmugamgsn
Do we know that the line joining points A and B is perpendicular to these parallel lines??... The figure suggests so, however, there is no mention of that in the question statement.. We cannot determine that this line is perpendicular...
PrashantPonde
Joined: 27 Jun 2012
Last visit: 29 Jan 2025
Posts: 311
Given Kudos: 185
Concentration: Strategy, Finance
Schools: Haas EWMBA '17
05 Jan 2013, 22:26
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The diagram given in the problem is deceiving. You assumed the line AB is perpendicular to those parallel lines, however those parallel line can have any slope. Check below diagram.
Coordinates of A & B does not help to find out the slope of parallel lines.
Hence the correct answer choice is (E)
Parallel Lines.jpg [ 86.23 KiB | Viewed 4126 times ]
Coordinates of A & B does not help to find out the slope of parallel lines.
Hence the correct answer choice is (E)
Attachment:
Parallel Lines.jpg [ 86.23 KiB | Viewed 4126 times ]
