F(x, y) = x + (2 * y)
regsol(x, y) = (x - (2 * y) ≤ -2) ∧ (x - y ≥ 0) ∧ (x ≥ 0) ∧ (y ≥ 0)
B = Intersect(b, c)
a = 6 (slider from 0 to 100, step 1)
d: x + (2 * y) = a
O = Intersect(xAxis, yAxis)
texto1: "F(x,y)=" + F + ""
texto2: "F(x,y)=" + a + ""
E = Point(d)