Answer:
A, B, and C
Step-by-step explanation:
For each value of the x plotted in the graph there can be only 1 y-value, according to the definition of a function.
The circle shown in the last picture isn't a function since there are two y-values plotted on each 1 x-value.
- For example in the last graph, if looked at the point (1,0), this is an x-value, there are 2 y-values (1,6) and (1, -6) for that value.
Hope this helped!
