2-5 Compare 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 from a table?

Back

A proportional relationship can be identified in a table if the ratios of the corresponding values are the same.

Front

What does the slope of a line represent in a graph of a proportional relationship?

Back

The slope of a line in a graph of a proportional relationship represents the constant rate of change between the two quantities.

Front

If Ann walks 3 miles in 1 hour, what is her walking rate?

Back

Ann's walking rate is 3 miles per hour.

Front

If Bob walks 5 miles in 2 hours, what is his walking rate?

Back

Bob's walking rate is 2.5 miles per hour.

Front

How do you compare two rates to determine which is faster?

Back

To compare two rates, calculate the unit rate for each and compare the values.

Front

What is the unit rate?

Back

The unit rate is the ratio of two measurements in which the second measurement is 1.

Front

If it costs $1,050 to produce 30 pairs of earbuds, what is the cost per pair?

Back

The cost per pair of earbuds is $35.

Front

If headphones cost $1,200 to produce 30 pairs, what is the cost per pair?

Back

The cost per pair of headphones is $40.

Front

How do you determine which item is more expensive to make?

Back

Compare the cost per item for each product; the one with the higher cost per item is more expensive to make.