7th Grade Ratios and Proportional Relationships

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per' something (e.g., miles per hour).

Front

How do you find the unit rate from a total distance and time?

Back

To find the unit rate, divide the total distance by the total time.

Front

What is the formula for finding the price per item?

Back

Price per item = Total price / Number of items.

Front

How do you calculate the constant of proportionality?

Back

The constant of proportionality is found by dividing one quantity by another when they are proportional.

Front

What does it mean for a relationship to be proportional?

Back

A relationship is proportional if two quantities maintain a constant ratio or rate.

Front

What is a non-proportional relationship?

Back

A non-proportional relationship does not maintain a constant ratio between two quantities.

Front

If a car travels 320 miles in 8 hours, what is the unit rate?

Back

40 miles per hour.

Front

If a family buys 4 concert tickets for $252, what is the price per ticket?

Back

$63.00.

Front

If I have 1/2 hour to do 3 chores, how much time can I spend on each chore?

Back

1/6 hour.