Compare 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

How do you identify a proportional relationship from a graph?

Back

A proportional relationship can be identified from a graph if the line passes through the origin (0,0) and is straight.

Front

What is the unit rate?

Back

The unit rate is the ratio of two measurements in which the second quantity is one unit.

Front

If a car travels 140 miles on 4 gallons of gas, what is the miles per gallon?

Back

35 miles per gallon.

Front

How do you compare two proportional relationships?

Back

You can compare two proportional relationships by finding their unit rates and determining which one is greater.

Front

What does the slope of a line represent in a proportional relationship?

Back

The slope of a line in a proportional relationship represents the unit rate.

Front

If ducks lay eggs at the rate of y=x, what does this mean?

Back

This means that for every unit of time, ducks lay one egg.

Front

How can you determine the cost per item from a graph?

Back

You can determine the cost per item by finding the point on the graph that corresponds to one item and reading the value on the y-axis.

Front

What is the formula for finding the unit rate?

Back

The formula for finding the unit rate is: Unit Rate = Total Quantity / Number of Units.

Front

If Lorenzo pays $9.00 for 4 ice cream cones, what is the cost per cone?

Back

The cost per cone is $2.25.