Question 1

Which of the following graphs represents a function that is **one-to-one**?

Accepted Answer

The second graph (top row, right image)

Question 2

For the first graph (top row, left image), which of the following statements is true?

Accepted Answer

The graph fails both the vertical and horizontal line tests.

Question 3

Which graph among the three shown fails the **vertical line test** and therefore is not a function?

Accepted Answer

The fourth graph (bottom row, right image)

Question 4

Which of the following best describes the bottom graph in the third image (bottom row, right image)?

Accepted Answer

It is not a function because it fails the vertical line test.

Question 5

Which graph represents a function whose inverse is also a function?

Accepted Answer

The second graph (top row, right image)

Determining If a Function Is One-to-One from Its Graph

Study Guide - Practice Questions