Graphing 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

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity of one.

Front

How do you find the unit rate from a graph?

Back

To find the unit rate from a graph, identify the slope of the line, which represents the change in the y-value per change in the x-value.

Front

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

Back

If a table represents a proportional relationship, the ratios of the corresponding values are equivalent.

Front

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

Back

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

Front

What is the unit rate for 120 miles in 2 hours?

Back

The unit rate is 60 miles per hour.

Front

If a recipe uses 1 cup of vinegar for every 2 cups of cleaner, what is the ratio of vinegar to cleaner?

Back

The ratio of vinegar to cleaner is 1:2.

Front

What is the formula to calculate the unit rate?

Back

The formula to calculate the unit rate is: Unit Rate = Total Quantity / Number of Units.

Front

If a car travels 180 miles in 3 hours, what is the unit rate?

Back

The unit rate is 60 miles per hour.

Front

What does it mean for a relationship to be proportional?

Back

A relationship is proportional if it can be represented by a straight line through the origin on a graph.