Unit Rates and Proportionality Concepts

This video tutorial teaches how to find unit rates in diagrams. It begins with a basic explanation of unit rates, using the example of milk costing three dollars per gallon. The tutorial then explains that unit rates can also be called the constant of proportionality. The video provides two examples of finding unit rates in diagrams: one in a pet shop and another in a newspaper ad. In both cases, the focus is on identifying single quantities within the diagrams to determine the unit rate.

What is the unit rate in the example where one gallon of milk costs three dollars?

• One gallon per three dollars

• Three dollars per gallon

• One dollar per three gallons

• Three gallons per dollar

What is another term used for unit rate?

• Proportional constant

• Constant of proportionality

• Rate of change

• Variable rate

In the pet shop example, what is the unit rate for goldfish?

• One goldfish for every two cups of water

• One goldfish for every three cups of water

• Two goldfish for every cup of water

• Three goldfish for every cup of water

Why did Kevin attach diagrams to each tank in his pet shop?

• To advertise a new product

• To decrease wait time for customers

• To decorate the tanks

• To increase the price of goldfish

In the newspaper ad example, what is the unit rate for goldfish?

• One goldfish for three quarters

• Three goldfish for one quarter

• Two goldfish for one quarter

• One goldfish for two quarters

What does a single quantity in a diagram represent?

• A variable rate

• A proportional rate

• A unit rate

• A constant rate