Answer:
C
Step-by-step explanation:
THe equation given is
2x+2y=16
y=x-4
We put 2nd equation in first equation and first solve for x:

Now, since we know y = x - 4, we substitute x = 6 and get y:
y = x - 4
y = 6 - 4
y =2
The correct ordered pair is (6,2), answer choice C
The first one is x^2+2x+2
the second one is x^2+4
the last one is x^2-4x+8