Proportional v. Non-Proportional Relationships

Front

What are the main characteristics of a proportional relationship between two variables?

Back

They are linear and also pass through the origin.

Front

What is the unit rate if the distance in leagues, x, and the distance in miles, y is given as k = 3?

Back

k = 3

Front

Is the graph proportional or nonproportional if it does not pass through the origin?

Back

Non proportional

Front

Which statement best describes the relationship of x and y in the table if they are proportional?

Back

Proportional

Front

What is the y-intercept for a proportional graph?

Back

b = 0

Front

What does it mean if a relationship is proportional?

Back

It means that the ratio of the two variables is constant.

Front

What is a non-proportional relationship?

Back

A relationship where the ratio of the two variables is not constant.

Front

How can you identify a proportional relationship from a graph?

Back

If the line passes through the origin and is straight.

Front

What is the formula for a proportional relationship?

Back

y = kx, where k is the constant of proportionality.

Front

If the unit rate is k = 1/3, what does this indicate about the relationship?

Back

It indicates that for every 1 unit of x, there are 1/3 units of y.