The lines joining the origin to the point of intersection of The linesjoining the origin to the point of intersection of `3x^2+m x y=4x+1=0`and `2x+y-1=0`are at right angles. Then which of the following is not a possible valueof `m ?``-4`(b) 4(c) 7 (d)3A. -4B. 4C. 7D. 3

The lines joining the origin to the point of intersection of The lines

1.	The lines joining the origin to the point of intersection of The linesjoining the origin to the point of intersection of `3x^2+m x y=4x+1=0`and `2x+y-1=0`are at right angles. Then which of the following is not a possible valueof `m ?``-4`(b) 4(c) 7 (d)3A. -4B. 4C. 7D. 3
Answer» Correct Answer - 1,2,3,4 The equation of the lines joining the origin to the points of intersection of the given lines is `3x^(2)+mxy-4x(2x+y)+(2x+y)^(2)=0` (by homogenization) or `x^(2)=mxy-y^(2)=0` which are perpendicular for all values of m.

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