This is my answer/how I did it :
y+5x=17 can also be 5x+y=17
5x+y=17
-y -y
5x=17-y
+17 +17
5x+17=y (answer)
Do 4x9+5 because you multiply 4 and c and then add on d.
Answer:
I would assume you're referring to this test? if so the answer is
a, d and e
The answer is C, because there are two different numbers correlated to the same number on the Y side. The table does not represent a function.