Q. If three lines whose equations are , and , are concurrent, then
I.
II.

 309  191 Straight Lines Report Error

Solution:

Given equation of lines are
(i)
(ii)
(iii)
On solving Eqs. (i) and (ii), we get



From Eq. (i),


On putting the values of and in Eq. (iii), we get





Hence proved.