If the lines `x+2ay+a=0, x+3by+b=0` and `x+4cy+c=0` are concurrent then `a,b,c` are in

If the lines x+ 3y -9=0 , 4x+ by -2 =0, and 2x -4 =0 are concurrent, then the equation of the lines passing through the point (b,0) and concurrent with the given lines, is

If the three distinct lines x + 2ay + a = 0 , x+ 3by + b = 0 and x + 4ay + a = 0 are concurrent , then the point (a,b) lies on a .

If the lines 2x - ay + 1 = 0, 3x – by + 1 = 0, 4x-cy+1 =0 concurrent, then a, b, c are in (A) A.P. (B) G.P. (C) H.P. (D) A.G.P

If the lines x +3y -9 = 0, 4x + by -2 = 0 and 2x -y -4 = 0 are concurrent , the b is equal to

If the lines x+a y+a=0,\ b x+y+b=0\ a n d\ c x+c y+1=0 are concurrent, then write the value of 2a b c-a b-b c-c adot

If the lines 2x-ay+1=0,3x-by+1=0,4x-cy+1=0 are concurrent,then a,b,c are in

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

If the lines ax+by+c=0,bx+cy+a=0 and cx+ay+b=0 be concurrent,then: