b: (3 * x) + y = 18
a: x + (2 * y) = 12
A: (0, 0)
C = Intersect(a, b)
B = Intersect(a, yAxis)
D = Intersect(b, xAxis)
eq1: x = 4.8
f: y = 3.6
q1, a_1, b_1, c, d = Polygon(A, B, C, D)
Viagens = 8.4 (slider from 0 to 8.4)
eq2: Viagens = x + y