# Functions - Using the Veritical Line Test and Mapping Diagrams

Worksheet (Algebra)

## Functions - Using the Veritical Line Test and Mapping Diagrams Worksheet

## Lesson:

8. To determine if relations are functions by applying mapping diagrams and the vertical line test.

## Subject:

## Number of Problems:

15

## Pages:

6

## Answer Key:

No

## Samples:

Is each relation a function? Use a mapping diagram. Explain your answer.

1. {(4, 7), (9, 11), (4, 6), (10, 2)}

Identify which of the following graphs are NOT functions.

Answer(s): ___________________________. (there may be more than one!)

Is each relation a function? Use the vertical line test. Explain your answer.

4. {(2, 5), (-3, 5), (0, 5), (3, 5)}

6. The function to the right is called:

A. a quadratic function

B. a V function

C. an absolute value function

D. a linear function Graph each equation using a table and a graph.

9. f(x) = –2x – 1

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