Different Representation of Proportional Relationships

What is the constant of proportionality?

• k = 3

• k = 1/3

• k = 3x

• k = 1/3x

Write an equation for the relationship between x and y. Use format y = kx.

Newtown middle school spends 11 dollars on every yearbook it buys. Is the amount of money NMS spends on yearbooks proportional to the total number of yearbooks NMS buys?

• Yes

• No

Joe screen prints t-shirts to sell. He is able to make 45 t-shirts every 3 hours. Which graph has a slope that represents the number of t-shirts that Joe can screen print every hour?

• 
• 
• 
• 

A laser tag league has the choice of two arena for a tournament. In both cases, x is the number of hours and y is the total charges. Compare and contrast these two situations.

• Arena A and Arena B are both proportional.

• Arena A is non-proportional.

• Arena B is non-proportional.

• Arena A and Arena B are both proportional.

A teacher listed the following equations on a board. Which of the equations listed represent proportional relationships?

• All of the above

• B only

• c and d only

• None of the above

• A

• B

• C

• D

Which situation can be represented by the equation y = 30x + 100?

• A mechanic charges $100 per hour to repair a car.

• The rental cost of a jet ski is $30 per hour

• You have $100 in your savings account, and you deposit $30 per month.

• A plumber charges $30 for a service call plus $100 per hour to repair a broken water pipe.

Does the table represent a proportional relationship?

• yes

• no

Does the table represent a proportional relationship?

• yes

• no