Question

Which of the following best describes the graph below?

A) It is a function, but it is not one-to-one
B) It is not a function.
C) It is a one-to-one function.
D) It is a many-to-one-function.

Answer 1

it is a one to one function
use vertical line test
no vertical line crosses 2 different x values

C

Answer 2

C.

No value of x has two values of y, thus it is a one-to-one function.