Question

Given the following relation:

{(0, 0), (1, 0), (2, 3), (2, 5), (3, 18)}
Which sentence best explains why it is not a function?

A. There are two ordered pairs with the same first coordinate and
different second coordinate.

B. There are two ordered pairs with the same second coordinate.

C. (0,0) is one of the ordered pairs.

D.There are only 5 ordered pairs.

Answer 1

The best sentence to describe why the relation is not a function is answer choice A. This is because answer A is the most specific and accurate. Each domain (x-value) in a function must uniquely map to one range value (y-value).