Answer:
(-3, -1)
Step-by-step explanation:
A function must pass the vertical line test and must not repeat any of the x-values.
Let's go through the options:
(-3, -1): sits on the graph without repeating any of the x-values of the graphed points
(2, -3): it has the same x-value as the 3rd point of the graph which means that if this point is added the graph will not remain a function
(-2, 1): it has the same x-value as the 2nd point of the graph which means that if this point is added the graph will not remain a function
(3, 0): it has the same x-value as the 4th point of the graph which means that if this point is added the graph will not remain a function
This leaves only the first choice as an option: (-3,-1)