Proportional Relationship Constant O

Determine the Constant of Proportionality.

An app developer projects that he will earn $20.00 for every 8 apps downloaded. Write an equation to represent the proportional relationship between the total earnings, y, and the number of apps downloaded, x.

• y = 2.5x

• y = .4x

• y = 20x

• y = 8x

The table shows the relationship between the total sales, y, and the number of textbooks sold, x. Write an equation that represents this situation.

Do NOT enter spaces.

Which of the following situations represents a proportional relationship?

• A cheeseburger is $7.59 plus $1.00 for each additional topping.

• A pool fills at a rate of 90 gallons per hour.

• A health club charges a $40.00 membership fee plus $25.00 a month.

• A bank account begins with $350.00 and gains $30.00 per month.

Determine if the representation is P = Proportional or NP = Non-Proportional.

Jack spent $5.22 on 6 pairs of socks. Find the unit rate.

Jack spent $____ on a pair of socks. (Enter only the number)

Does the table represent a proportional relationship?

• yes

• no

Does the table represent a proportional relationship?

• yes

• no

Does the graph represent a proportional relationship?

• yes

• no

Which equation represents a proportional relationship?

• y = x + 3

• y = x - 9

• y = 7x

• y = 4x + 1