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.

For what value of m are the three lines y=x+1, y=2(x+1) and y=mx+3 concurrent ?

(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

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

Find the value of a for which the lines 2x+y-1=0 , a x+3y-3=0 , 3x+2y-2=0 are concurrent.

Find the value of a for which the lines 2x+y-1=0 , a x+3y-3=0 , 3x+2y-2=0 are concurrent.

Show that the lines 2x + 5y = 1, x - 3y = 6 and x + 5y + 2 = 0 are concurrent.

Find the value of m, for which the line y=mx + 25sqrt3/3 is a normal to the conic x^2 /16 - y^2 / 9 =1 .

Find the value of lambda so that the line 3x-4y= lambda may touch the circle x^2+y^2-4x-8y-5=0

The number of values of a for which the lines 2x+y-1=0 , a x+3y-3=0, and 3x+2y-2=0 are concurrent is (a).0 (b) 1 (c) 2 (d) infinite