JEE Advanced | 2012Straight LineHard
Question
A line is drawn through the point (1, 2) to meetthe coordinate axes at P and Q such that it formsa triangle OPQ, where O is the origin. If the areaof the triangle OPQ is least, then the slope ofthe line PQ is :
Options
A.
B.
C.- 4
D.- 2
Solution
Let the equationof line be 
It passes through (1, 2)
∴
Area of
but at a = 0,ᐃ not possible
∴ a = 2
slope of line
It passes through (1, 2)
∴
Area of
but at a = 0,ᐃ not possible
∴ a = 2
slope of line
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