Question -
Answer -
Given:
p1x + q1y= 1
p2x + q2y= 1
p3x + q3y= 1
The given lines can bewritten as follows:
p1 x +q1 y – 1 = 0 … (1)
p2 x +q2 y – 1 = 0 … (2)
p3 x +q3 y – 1 = 0 … (3)
It is given that thethree lines are concurrent.
Now, consider thefollowing determinant:
Hence proved, thegiven three points, (p1, q1), (p2, q2)and (p3, q3) are collinear.