Lets plug in -3. When we plug in -3 for x, we would need to add it to 15. So that means
-3+y=15 y=18.
It shows that the ordered pair is actually (-3,18). So A and B are wrong. Now lets check out C. Lets plug in 16 for x and see what happens.
16+y=15 y=-1
Wow, it looks like the ordered pari for 16 would be (16,-1). So it looks like all your choices are wrong. Wow. But, from what I see, these ordered pair work:
