Question

if l,m,n are in A.P then the lines represented by lx+my+n=0 are concurrent at the point​

Answer 1

The equation of given line is lx+my+n=0 ....(1)

If l,m,n are in arithmetic progression then, 2m=l+n ...(2)

Equation (2) can be written as, l−2m+n=0 ...(3)

Now comparing the equation (3) with equation (1), we can clearly see that line lx+my+n=0 passes through the point (1,−2)

Hence the correct option is B.

Answer 2

Answer:

Hence the correct answer is (1,-2)

The option is a)....