x-2y=8
x=0
0-2y=8
-2y=8;
y=8/(-2)=-4
(0;-4)
y=0;
x-2*0=8;
x-0=8;
x=8
(8;0)
x=2;
2-2y=8;
-2y=8-2;
-2y=6;
y=6/(-2)=-3;
(2;-3)
x-2y=8
x=0
0-2y=8
-2y=8;
y=8/(-2)=-4
(0;-4)
y=0;
x-2*0=8;
x-0=8;
x=8
(8;0)
x=2;
2-2y=8;
-2y=8-2;
-2y=6;
y=6/(-2)=-3;
(2;-3)