Answer:
First graph
Step-by-step explanation: A set of ordered pairs is a function if for every x value there is one y value.The set of ordered pairs are function if they pass the vertical line test.If a vertical line is drawn then the line will cut at only one point.
In first graph for all x values we have different y values so the ordered pairs represent a function.
In second graph for x= -2 we have two y values -1 and 1 so the ordered pairs will not represent a function.
