Evaluating Proportional Relationships

Select all equations that represent proportional relationships.

• 
• 

Is the graph proportional?

• Yes

• No

Newtown middle school spends 11 dollars on every yearbook it buys. Is the amount of money NMS spends on yearbooks proportional to the total number of yearbooks NMS buys?

• Yes

• No

What is the unit rate/constant of proportionality?

• 80 miles in 1 hours

• 20 miles in 1 hours

• 40 miles in 1 hours

• 160 miles in 1 hours

Which statement best describes the relationship between x and y in the table?

• Proportional

• Not Proportional

What is the unit rate in this proportional relationship?

• 60 miles/1 hour

• 120 miles/ 2 hours

• 1 mile/ 1 hour

Find the constant of proportionality on this table of values.

• k=3

• k=1

• k=0

• k=4

What makes a graph proportional?

• Straight Line

• The line goes through (0,0)

• Curvy line

• Straight line and passes through (0,0)

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

• y=14

What is the constant of proportionality (in miles per hour) based on the table?

• 45

• 90

• 135

• 2