Proportional Relationships

What is a unit rate?

• Expressing a rate as a unit of 1

• Expressing rates as 2 units

• Expressing speed

What operation should one use to find a unit rate?

• addition

• subtraction

• multiplication

• division

Which example expresses a unit rate?

• 5 miles in 30 minutes

• 6 minutes per mile

• $25 for 50 pounds

Find the unit rate in dollars per pound if 10 pounds costs $5.00.

• $2.00 per pound

• $50.00 per pound

• $0.50 per pound

Is the following table proportional?

• Yes

• No

Does the following table show a proportional relationship between the amount of paint in gallons to the number of brushes available?

• Yes

• No

A table is proportional when all the unit rates are different.

• True

• False

A graph that shows a proportional relationship must do the following:

• Be a straight line

• Be a wavy line

• Pass through the origin

• Have at least 3 points graphed

Does this graph show a proportional relationship?

• Yes

• No

Does this graph show a proportional relationship?

• Yes

• No