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 find the unit rate from a proportional relationship?

Back

To find the unit rate, divide the total amount of one quantity by the total amount of the other quantity.

Front

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

Back

The unit rate is $2.25 per ice cream cone.

Front

What does a graph of a proportional relationship look like?

Back

A graph of a proportional relationship is a straight line that passes through the origin (0,0).

Front

What is the equation of a proportional relationship?

Back

The equation of a proportional relationship can be expressed as y = kx, where k is the constant of proportionality.

Front

How can you determine if two ratios are proportional?

Back

Two ratios are proportional if their cross products are equal.

Front

What is the constant of proportionality?

Back

The constant of proportionality is the ratio of one quantity to another in a proportional relationship, often represented by 'k'.

Front

If a graph shows that snow falls at a rate of 3 inches per hour, what is the unit rate?

Back

The unit rate is 3 inches per hour.

Front

How do you compare two proportional relationships using graphs?

Back

You can compare two proportional relationships by looking at the slopes of their graphs; a steeper slope indicates a greater unit rate.

Front

What does it mean if a car gets 35 miles per gallon?

Back

It means that for every gallon of fuel, the car can travel 35 miles.