Question

Which of the following tables does not represent a function?

x y
-1 1
-2 1
-3 1

x y
-5 1
-5 -2
-5 -5

x y
-4 0
2 0
5 7

x y
-5 1
-3 -2
-1 -5

Answer 1

x y

-5 1

-5 -2

-5 -5

Explanation:

same x value, but different y value