Determine which of the following relations is a function.
x
-10
-5
0
5
10
Y
10
5
0
-5
-10
x
-3
-1
0
0
3
Y
2
1
2
1
4
x
-8
-2
1
24
Y
-4
-2
3
4
6
0
X
0
1
2
2
5
Y
2
426
6
7