2x+y= 6 -> y= -2x+6
X+y= 4 -> y= -x +4
Try (2,2)
1. 2= -2(2) + 6
2 = 2
2. 2= -2 + 4
2=2
So (2,2) is satisfied both equations. Let see if the others do too.
Try (4,0)
1. 0= -2(4) + 6
0=0
2. 0= 4+4
So 4,0 is not satisfied both
(2,2) is the answer
Hope this helps!