Use the substitution method to solve the system of equations. choose the correct ordered pair. 2y + 2x = 8 2y - 4x = 2

2y + 2x = 8
2y - 4x = 2

2y = 8 - 2x (divide by 2 on both sides)
y = 4 - x (insert this into the second equation

2*(4-x) - 4x = 2
8 - 2x - 4x = 2
8 - 6x = 2
-6x = 2 - 8
-6x = -6
x = 1 (insert this into either of the first two equations)

2y + 2*1 = 8
2y + 2 = 8
2y = 8 - 2
2y = 6
y = 6/2
y = 3

(x,y) = (1,3)

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.