(G8) Constant or Proportionality from Table

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

How can you determine if a table represents a proportional relationship?

Back

A table represents a proportional relationship if the ratios of the corresponding values are equal.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant ratio between two proportional quantities.

Front

If a car travels 300 miles in 5 hours, what is its speed in miles per hour?

Back

60 miles per hour.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the constant of proportionality for flour to sugar?

Back

The constant of proportionality is 2/3.

Front

What is the unit cost?

Back

The unit cost is the cost per single unit of a good or service.

Front

How do you calculate the unit cost?

Back

To calculate the unit cost, divide the total cost by the number of units.

Front

If 10 apples cost $5, what is the unit cost per apple?

Back

$0.50 per apple.

Front

What does it mean if a table has a constant ratio?

Back

It means that the relationship between the two quantities is proportional.

Front

If a table shows the values (2, 4), (3, 6), (4, 8), what is the constant of proportionality?

Back

2.