Constant of Proportionality, Proportional Relationships and Unit Rate

A store sees 120 customers in 8 hours. What is the constant of proportionality?

• 16 customers per hour

• 15 customers per hour

• 12 customers per hour

• 20 customers per hour

A proportional relationship can be written as an equation in the form ____ = _____  _____

• y = k+x

• y = k-x

• y = kx

• y = k/x

On Saturday, Dr. Morrison drove 340 miles in 5 hours. On Sunday, he drove 198 in 3 hours. Based on this information, which statement is true?

• His rate on Saturday was 2 miles per hour slower than his rate on Sunday.

• His rate on Sunday was 2 miles per hour slower than his rate on Saturday.

• His rate on Saturday was the same as his rate on Sunday.

• His rate on Sunday was 2 miles per hour faster than his rate on Saturday.

Is the graph proportional or non proportional?

• proportional

• non proportional

Does this table represent a proportional relationship?

• Yes

• No

What is the unit rate, or constant of proportionality?

• 45 

• 90 

• 135 

• 2 

What word describes the constant value of the ratio of proportional quantities x and y? Hint: It is another word for the unit rate.

• Constant of Proportionality

• Equivalent Fraction

• Proportion

• Scale Factor

What is the unit rate, or constant of proportionality?

• k = 3

• k = 6

• k = 9

• k = 12

What is the Constant of Proportionality?

• k = 1

• k = 2

• k = 3

• k = 4

There is a proportional relationship between the number of kids in a group, x, and the total number of caramel chews Paco gives to that group, y. What is the constant of proportionality?

• k = 4

• k = 2

• k = 5

• k = 1