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

What does the ordered pair (20, 3000) represent?

Back

The machine folds 3,000 sheets in 20 minutes.

Front

What does the point (2, 94) represent in this situation?

Back

After 2 weeks, they save $94.

Front

How do you determine if a graph is proportional?

Back

A graph is proportional if it passes through the origin (0,0) and forms a straight line.

Front

What is the equation of a proportional relationship?

Back

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

Front

How do you find the constant of proportionality?

Back

The constant of proportionality (k) can be found by dividing y by x in the equation y = kx.

Front

What does it mean if a table shows a proportional relationship?

Back

If a table shows a proportional relationship, the ratios of the corresponding values of x and y are constant.

Front

Is the graph of y = 3x proportional?

Back

Yes, the graph of y = 3x is proportional because it is a straight line that passes through the origin.

Front

How do you compare unit rates?

Back

To compare unit rates, convert each rate to a common unit and then compare the values.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.