Proportional Relationships Review for Flashcard #1

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 is constant.

Front

Define unit rate.

Back

A unit rate is a comparison of two different quantities when they are combined together. It is expressed as a quantity per one unit of another quantity.

Front

How do you find the rate of change from a graph?

Back

The rate of change can be found by calculating the change in the y-values divided by the change in the x-values (slope).

Front

What is the formula for calculating the slope (rate of change)?

Back

Front

If a graph shows a straight line through the origin, is it proportional?

Back

Yes, if a graph shows a straight line through the origin, it indicates a proportional relationship.

Front

What does it mean if a graph is not proportional?

Back

If a graph is not proportional, it means that the relationship between the two quantities does not maintain a constant ratio.

Front

Calculate the unit rate: $4.50 for 6 pounds of oranges. How much does it cost for 1 pound?

Back

$0.75 per pound.

Front

What is the constant rate of change if the change in y is 10 and the change in x is 2?

Back

Front

True or False: A proportional relationship can be represented by a linear equation.

Back

True.

Front

Back

The unit rate is 5.