Question

Determine whether the relation is a function. Explain why or why not.

{(2, 5), (3, –5), (4, 5), (5, –5)}


A.
Yes; no value in the domain corresponds to more than one value of the range.


B.
No; the domain value 5 corresponds to two range values, 2 and 3.


C.
Yes; multiple domain values correspond to the same range value.

Answer 1

A. Yes; no value in the domain corresponds to more than one value of the range.

Explanation:

There is no domain value that corresponds to more than one range value.

If you graph the ordered pairs on a coordinate plane, you cannot draw a vertical line that passes through more than one point.