Find the value of `m` so that the straight lines `y=x+1, y=2 (x+1) and y=mx+3` are concurrent.

Show that the straight lines : x-y-1=0 , 4x+3y=25 and 2x-3y+1=0 are concurrent.

Find the value of m so that lines y=x+1, 2x+y=16 and y=mx-4 may be concurrent.

Find the value of m so that the lines 3x+y+2=0, 2x-y+3=0 and x+my-3=0 may be concurrent.

If the lines y=x+1 , y=2x and y=kx+3 are concurrent find the value of 'k' .

Find the value of P ,if the straight lines x+P=0,y+2=0 and 3x+2y+5=0 are concurrent.

Find the value of p, so that three lines 3x+y=2=0,px+2y-3=0 and 2x-y=3 are concurrent.

If the lines 3y+4x=1, y=x+5 and 5y+bx=3 are concurrent then b=

Find the value of k so that the lines 3x-y-2=0, 5x+ky-3=0 and 2x+y-3=0 are concurrent.

If the straight lines 3x+4y+2=0,2x-y+3=0 and 2x+ay-6=0 are concurrent,then a=

(i) Find the value of 'a' if the lines 3x-2y+8=0 , 2x+y+3=0 and ax+3y+11=0 are concurrent. (ii) If the lines y=m_(1)x+c_(1) , y=m_(2)x+c_(2) and y=m_(3)x+c_(3) meet at point then shown that : c_(1)(m_(2)-m_(3))+c_(2)(m_(3)-m_(1))+c_(3)(m_(1)-m_(2))=0