Question

The graph represents a relation where x represents the independent variable and y represents the dependent variable.

a graph with points plotted at negative 5 comma 1, at negative 2 comma 0, at negative 2 comma negative 2, at 0 comma 2, at 1 comma 3, and at 5 comma 1

Is the relation a function? Explain.

Yes, because for each input there is exactly one output.
Yes, because for each output there is exactly one input.
No, because for each input there is not exactly one output.
No, because for each output there is not exactly one input.

Answer 1

No, because for each input there is not exactly one output.

Explanation:

-2 has 2 outputs which means it's not a function.