y= \frac{ x }{2 } - 2

y = x

y  =  \frac{   x²}{ 4} - 4

f(x) = x^(2) / 4 - 4
g(x) = x / 2 - 2
M = Point(xAxis)
a = Line(M, yAxis)
h(x) = x
A = Intersect(g, a, 1)
b = Line(A, xAxis)
B = Intersect(h, b, 1)
c = Line(B, yAxis)
C = Intersect(f, c, 1)
d = Line(C, xAxis)
D = Intersect(a, d)
loc1 = Locus(D, M)