e x^2 -2cx + c^2 + a^2x^2 +2ax(b-d) + (b-d)^2 = e (1+a^2)x^2 + 2(a(b-d)-c)x + c^2 + (b-d)^2 - e = 0 Apply the quadratic formula and you get 0/1/2 x-values. Substitute these into y = ax+b to get your 0/1/2 points of intersection. Back to top Selective Quote #3 kneeride