x + 2y ≥ 8, x + y ≤ 8, x ≥ 0 yaitu …
Titik potong garis I & II
3x + 2y = 12
x + 2y = 8 _
2x = 4
x = 2
2 + 2y = 8
y = 3, titik potong (2, 3)
Fungsi objektif Z = x + 3y
Titik (0,8) ➝ Z = 0 + 24 = 24
(0,6) ➝ Z = 0 + 18 = 18
(2,3) ➝ Z = 2 + 9 = 11
(8,0) ➝ Z = 8 + 3(0) = 8
∴Nilai minimum = 8