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 is constant.

Front

How can you identify if a table represents a proportional relationship?

Back

A table represents a proportional relationship if the ratios of the corresponding values are equal.

Front

What does the point (2, 94) represent in a proportional relationship?

Back

After 2 weeks, they save $94.

Front

What is the formula to find the unit rate in a proportional relationship?

Back

Unit rate = (value of one quantity) / (value of the other quantity).

Front

If a recipe calls for 1/4 cup of sugar for every 1 cup of flour, how much sugar is needed for 2 cups of flour?

Back

1/2 cup of sugar.

Front

Is the graph of a proportional relationship a straight line through the origin?

Back

Yes, a proportional relationship is represented by a straight line that passes through the origin.

Front

What does it mean if a graph is not proportional?

Back

It means that the relationship between the two quantities does not maintain a constant ratio.

Front

If Daniel walked 2/5 mile in 1/4 hour, how do you calculate his speed in miles per hour?

Back

Speed = distance/time = (2/5) / (1/4) = 1.6 miles per hour.

Front

What is the constant of proportionality?

Back

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

Front

How do you determine if a set of points on a graph is proportional?

Back

If the points form a straight line through the origin, they are proportional.