Question

Which list of ordered pairs represents solutions to x + y = 2 ?

Answer 1

It can be 
1+1=2
0+2=2
or some of these kind of pairs.
Hope that this all helps you!=)

Answer 2

 (-4, 6), (0, 2), (4, -2) 

Those are coordinates. The first number is the x-coordinate and the second one is the y-coordinate. 

So for instance in this coordinate (-4, 6), the x is -4 and y is 6. 

x + y = 2 
-4 + 6 = 2 
2 = 2 
true 

Try that for the other coordinates as well and you will find out (-4,6), (0,2), (4,-2) is the correct answer.