Which of the following statements best explains why this graph shows a set of points that represent a relation that is not a function of x?
y

8
7
6
5
4
-0.8-7-6
1 2 3 4 5 6 7 8 9
-3
4
5-
-6-
-8
There are y-values which are paired with multiple x-values.
There are x-values which are paired with multiple y-values.
There are x-values which are not paired with a y-value
There are y-values which are not paired with an x-value.