f(x) = If[0 ≤ x ≤ 4, 1 + (0.25 * x), If[x > 4, 1.6 + (0.1 * x)]]
A = (-0.011699017246497766, 2.1125498747744227)
B = (5, 0)
h = Line(A, xAxis)
g = Line(B, yAxis)