Find the distance between the straight lines y = mx + c and y = mx + d where c > d > 0.

Find the distance between the parallel straight lines y=mx+c and y=mx+d .

Find the distance between the parallel lines 3x-4y+9=0 and 6x-8y-15=0 .

Find the differential equation of all straight lines y = mx

Find the distance between the line 12x-5y+9=0 and the point (2,1).

Find the angle between the lines x-sqrt 3y=1 and sqrt 3x-y=1 .

Find the acute angle between the lines x - sqrt3 y = 1 and sqrt3 x -y = 4

Find the equivalent resistance between A and D.

Find the point where the stright line 4x -3y -6 = 0 cuts the coordinate axes.

Find the equation of straight line passing through the point of intersection of the straight lines 2x - 3y + 4 = 0 and x + 2y - 5 = 0 and perpendicular to the line 3x - 4y + 5 = 0.