Question

Is the relation a function? Why or why not?

{(3, –1), (3, 0), (–3, 4), (3, 8)}

Yes; only one range value exists for each domain value.
No; three range values exist for domain value 3.
No; the relation passes the vertical-line test.
Yes; three range values exist for domain value 3.

Answer 1

I believe the answer is B: No; three range values exist for domain value 3.

Explanation:

I believe this is the answer because I know the relation is not a function, so it isn't A. or D. Then I graphed the points and confirmed the answer is not C. because the relation does not pass the vertical -line test.

So I believe the answer is B. because, if the points are graphed, three of the points are in a vertical line with the value of 3, while one is in a domain value of -3.

Answer 2

B

Explanation:

An x can't have 2 y values and it still be a function. If it fails the vertical line test, it is not a function.