Ratio Rates and Constant of Proportionality

Which best describes the graph represented in this table?

• proportional

• non-proportional

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

What is a Ratio?

• A comparison of two quantities 

• To multiply two fractions 

• A number over another number

• Two decimals that can be multiplied

This is a table with a proportional relationship between A and B.  Find the missing value of B. 

• 33

• 44

• 32

• 48

A cake recipe calls for 1.5 cups of milk and 3 cups of flour. Seth made a mistake and used 5 cups of flour. How many cups of milk should he use to keep the proportions correct?

• 2.5 cups milk

• 1.75 cups milk

• 2 cups flour

• 2.25 cups milk

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

• y = k+x

• y = k-x

• y = kx

• y = k/x

Game Stop sees 120 customers in 8 hours. What is the unit rate (in customers per hour)?

• 15

• 12

• 20

• 14

What are the main characteristics of a proportional relationship between two variables?

• They pass through the origin.

• They are linear and also pass through the origin.

• They are curved

• They have a negative relationship and pass through the origin.

Is this table proportional?

• yes

• no

• I'm not sure, I need extra help!

A comparison between two quantities, in which for every A units of one quantity, there are B units of another quantity is called a​ (a)  

• ratio

• proportion

• proportional relationship

• proportional

• unit rate

• constant of proportionality