Finding Unit Rates in Proportional Relationships Using Graphs

What characteristic of a graph indicates a proportional relationship?

• A line that does not start at the origin

• A straight line through the origin

• A curved line

• A scatterplot with random points

Why is it important that all points on a graph of a proportional relationship have equivalent rates?

• It means the graph is a scatterplot.

• It indicates that the line is curved.

• It shows that the graph is not proportional.

• It allows for the determination of the unit rate from any point.

How do you convert a rate to a unit rate?

• By subtracting the smaller rate from the larger rate

• By dividing the rates by two

• By using the multiplicative inverse

• By adding the rates together

Which of the following is a common misunderstanding about unit rates?

• A simplified rate is always a unit rate.

• Unit rates are not related to multiplicative inverses.

• A unit rate is the same as a proportional rate.

• Unit rates can only be found on curved graphs.

In the example of Dorothy's running speed, what is the unit rate of her running?

• 10 miles per hour

• 8 miles per hour

• 12 miles per hour

• 5 miles per hour

What is the unit rate of white keys per black key on a piano?

• 1 and 2/5 white keys per black key

• 2 white keys per black key

• 3 white keys per black key

• 1 white key per black key

What is the equivalent rate of 35 white keys per 25 black keys when simplified?

• 6 white keys per 4 black keys

• 7 white keys per 5 black keys

• 8 white keys per 6 black keys

• 5 white keys per 3 black keys