Here we have two straight lines; first is ax+by+c=0 (red) and the second one is a_1 x+b_1 y+c_1=0 (green). We can change the values of a, b, c and a1, b1, c1 using their respective slide bars and observe how the position of the lines get changed.

Here we have two straight lines; first is ax+by+c=0 (red) and the second one is a_1 x+b_1 y+c_1=0 (green). We can change the values of a, b, c and a1, b1, c1 using their respective slide bars and observe how the position of the lines get changed.