Determine whether the function is a one-to-one function.
-{(6, 9), (7, 9), (8, -4), (9, 9)}
A) Yes
B) No

Question

Quizplus · Accepted Answer

The function is not one-to-one because two different inputs, 6 and 9, both correspond to an output of 9. The function is not one-to-one because both (6,9) and (7,9) have the same output of 9, meaning that two different inputs (6 and 7) correspond to the same output. Therefore, the function fails the horizontal line test, and is not one-to-one.

Determine Whether the Function Is a One-To-One Function