Proportional Relationships

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

If a car travels 420 miles in 8 hours, how far will it travel in 12 hours?

Back

630 miles

Front

What is a proportion?

Back

A proportion is when two ratios are equivalent and show the same value.

Front

If x/4 = 2, what is x?

Back

x = 8

Front

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

Back

The ratio of flour to sugar is 2:3.

Front

If a car travels 60 miles in 1 hour, how far will it travel in 5 hours?

Back

300 miles

Front

What is the constant of proportionality in the equation y = 3x?

Back

The constant of proportionality is 3.

Front

If 5 apples cost $2, how much do 15 apples cost?

Back

$6

Front

If a map has a scale of 1 inch to 10 miles, how many miles are represented by 3 inches?

Back

30 miles

Front

If a person can run 4 miles in 30 minutes, how long will it take to run 10 miles?

Back

75 minutes