eq1: (4 * x) + (7 * y) = 28
eq2: x + y = 6
F = Intersect(eq1, eq2)
B: (0, 4)
C: (7, 0)
D: (6, 0)
E: (0, 6)
A: (0, 0)
q1, a, d, f, b = Polygon(A, D, F, B)