Ratio Rates and Constant of Proportionality

The constant of proportionality for the graph above is 1.

• True

• False

Write an equation for the proportional relationship in the table.

• y=18x

• y=18.50x

• y=22.50x

• y=22x

A box of cereal cost $3.59 for 30 oz. How much is the unit rate per ounce? Round to the nearest cent.

• 11 cents

• 12 cents

• 13 cents

• 10 cents

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $5 per pound

• $35 per pound

• 0.125 pounds per dollar

Which statement best describes the relationship between x and y in the table?

• Proportional

• Not Proportional

Is the given table a proportional relationship? If so, what is the constant of proportionality?

• Yes; 1/3

• Yes; 3

• Yes; 5

• No

The constant of proportionality in the equation y = ½x is _______. 

• x

• y

• 1/2

• 2

What is the constant of proportionality ? (Unit rate)

• 2 bedsheets / 1 minute

• 3 bedsheets / 1 minute

• 4 bedsheets / 1 minute

• None of the above

Does the table represent a proportional relationship?

• Yes.

• No.

The constant of proportionality can be found by finding the __________  _____________.

• unit rate

• ratio rate

• proportion answer

• rational number