g(x) = 0.25 \; x^2+2

f(x) = (x - 2.0) / 4.0
text2: "f(x) = " + f
g(x) = 0.25 * x^(2.0) + 2.0
A = Point(g)
a = OrthogonalLine(A, xAxis)
B = Intersect(f, a)
AB = Segment(A, B)