eq1: (2 * x) - y = 0
A = Point(eq1)
f = OrthogonalLine(A, eq1)
c = Circle(A, 5)
B, C = Intersect(c, f)
eq2: (2 * x) - y - (5 * sqrt(5)) = 0
eq3: (2 * x) - y + (5 * sqrt(5)) = 0