2x + 3y = 12 , 3x - y = 7 tentukan HP dengan cara Metode Grafik

2x+3y=12
3x-y=7

2x+3y=12
x=0
2(0)+3y=12
3y=12
y=4
(0,4)

x=3
2(3)+3y=12
6+3y=12
3y=12-6
3y=6
y=2
(3,2)

3x-y=7
x=0
3(0)-y=7
-y=7
y=-7
(0,-7)

x=3
3(3)-y=7
9-y=7
-y=7-9
-y=-2
y=2
(3,2)

HP={3,2}