Proportional Relationships Review

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

What does it mean for a graph to show a proportional relationship?

Back

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

Front

How can you determine if a graph represents a proportional relationship?

Back

Check if the line passes through the origin and if the ratio of y to x is constant.

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

How do you find the unit rate from a distance and time?

Back

Divide the distance by the time to find the unit rate of distance per time.

Front

What is the equation of a line in a proportional relationship?

Back

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant factor that relates two proportional quantities.

Front

How do you calculate the rate of change from a table?

Back

The rate of change is found by dividing the change in the dependent variable by the change in the independent variable.

Front

What does it mean if a line on a graph does not pass through the origin?

Back

If a line does not pass through the origin, it indicates that the relationship is not proportional.

Front

What is an example of a proportional relationship in real life?

Back

An example is the relationship between the distance traveled and the time taken at a constant speed.