Use the substitution method to solve the system of equations. Choose the

correct ordered pair.

X + y = 10

y = X-6

A. (10,0)

B. (0,-6)

c. (8.2)

D. (2,-4)

The answer is C because if you substitute in X-6 for the y in the first equation (since X-6 is also equal to y), you get 2x=16 which means x=8. There is only one option where 8 is equal to X, but just to check you can substitute it back into either of the original equations to make sure that y=2.