Jawabanmu

2014-09-09T22:47:20+07:00
2x+3y≥9     x=4.5 y=3
x+y≥4        x=4 y=4

titik a =(0,4)      z=12
titik b =(-1,5)     z=11    (titik minimum)
titik c = (4.5,0)  z=18

maka, titik minimum = (-1,5)
x=-1
y=5