Y = 1 (slider from -5 to 5)
f(x, y) = (2 * x) + (3 * y)
A = Point(yAxis)
g = Line(A, zAxis)
h: z = (2 * x) + (3 * y)
B = Intersect(g, h)
p: z = x^(2)
q: z = x^(2) + y^(2)
r: z = 2
c = IntersectPath(r, q)