Question

Is the relation a function? Why or why not?

{(–1, 9), (0, –1), (–1, 4), (4, 9)}

Yes; there is only one domain value for each range value.
No; a domain value has two range values.
No; a range value has two domain values.
Yes; there is only one range value for each domain value.

Answer 1

Answer: it is c

Explanation:

It has two of the same domain