Unit 3B – Functions Review

TEST MONDAY!

Describe the relationship between x and y.

X Y

0 -1

3 8

8 23

12 35

Which of these data sets represents a function?

A B

C D

Using the mapping method, draw an example of a non-function.

Draw two tables, one that represents a function and one that does not.

Sketch two graphs, one that represents a function and one that does not.

1.) Which has a greater y-intercept?2.) Which has a greater rate of change?

X Y

-1 36

0 18

1 9

2 4.5

3 2.25

Given the linear function below, write an equation that has the same y-intercept, but smaller rate of change.

x y

-2 5

-1 10

0 15

1 20

2 25

The festival costs $8.00 to get in, plus $3.00 per game. Write a linear equation with a rate of change greater

than the festivals.

Meijer uses the following equation for the cost per pound of strawberries: y= 1.60x

Kroger uses the following table for the cost per pound of strawberries:

What is the difference in the price per pound?

X y

0 0

2 2.60

4 5.20

6 7.80

Describe what the motorcycle was doing at each section

Sketch a graph of the following:

• Tom leaves the library and walks home (0 miles)

• He plays video games, until his friend calls him to come play basketball at the local park next to the library.

• As soon as he gets to the basketball court his mom calls and tells him to meet her at the neighbors house.

Create a table, graph, and equation to model this situation: Your cell phone company

charges a monthly fee of $50.00 and $0.10 per text message.