Tentukan nilai maksimum fungsi sasaran z=3x+5y dengan syarat-syarat =x+3y < 9 , 2x+y < 8,x>0,y>0

z = 3x + 5y
syarat
x + 3y < 9
misal x = 0 , y = 2
z = 3(0) + 5(2) = 0 + 10 = 10
misal y = 0 , x = 8
z = 3(8) + 5(0) = 24 + 0 = 24
2x + y < 8
misal x = 0 , y = 7
z = 3(0) + 5(7) = 0 + 35 = 35
misal y = 0 , x = 3
z = 3(3) + 5(0) = 9 + 0 = 9