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co-ordinate geometry.

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by gmatmath » Sat Apr 07, 2012 8:57 pm
Yes, line 1 is parellel to the y axis because the equation of a line parallel to the y axis will have the equation x = k, where k is any constant.

In this case we have x = 4.
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by Shalabh's Quants » Sun Apr 08, 2012 5:47 am
Md.Nazrul Islam wrote:Is line 1 is parallel to the y-axis ?.

1)the equation of line 1 is x=4 .

2) the points (4,2) and (4,-5) are on the line 1.
from Stat.1, X=4; Any line with X=Constant will be parallel to Y axis. Sufficient condn.

from Stat.2, X=4 for both the points, hence it will be parallel to Y axis. Sufficient condn.

Ans. D.
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by Anurag@Gurome » Sun Apr 08, 2012 5:39 pm
Md.Nazrul Islam wrote:Is line 1 is parallel to the y-axis ?.

1)the equation of line 1 is x=4 .

2) the points (4,2) and (4,-5) are on the line 1.
(1) The equation of line 1 is x = 4 implies line 1 is parallel to y-axis, as x = 4 is a line passing through the point (4, 0), which is parallel to y-axis; SUFFICIENT.

(2) The points (4,2) and (4,-5) are on the line 1 again implies that line 1 is parallel to y-axis; SUFFICIENT.

The correct answer is D.
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by GMAT Kolaveri » Sun Apr 08, 2012 5:47 pm
Md.Nazrul Islam wrote:Is line 1 is parallel to the y-axis ?.

1)the equation of line 1 is x=4 .

2) the points (4,2) and (4,-5) are on the line 1.
Line parallel to y axis is of the fornm X=constant. hence D
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