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 can you identify a proportional relationship on a graph?

Back

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

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant ratio (k) between two proportional quantities.

Front

If 4 apples cost $2, what is the unit rate?

Back

The unit rate is $0.50 per apple.

Front

What does it mean if a graph is non-proportional?

Back

A non-proportional graph does not have a constant ratio and does not pass through the origin.

Front

How do you find the perimeter of a triangle?

Back

To find the perimeter of a triangle, add the lengths of all three sides.

Front

What is the unit rate for 72 ounces for 12 servings?

Back

6 ounces per serving.

Front

If the constant of proportionality is k=3, what does this mean?

Back

It means that for every unit increase in one quantity, the other quantity increases by 3 times.

Front

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

Back

An example is the relationship between distance and time when traveling at a constant speed.

Front

How do you determine if a table represents a proportional relationship?

Back

Check if the ratios of corresponding values are constant.