Read Proportional Graphs

Determine the constant of proportionality for the graph.

• 1/5

• 2

• 5

• 10

The graph shows that the amount of water in a person’s body varies directly with the person’s mass. What is the ratio of the vertical distance to the horizontal distance on the graph between the points (15, 10) and (30, 20)?

• 
• 
• 
• 

The graph shows the distance a ghost crab can run over time.

Let d equal the distance in meters and t equal the time in seconds. Which is a direct variation equation for this relationship?

• 
• 
• 
• 

The amount of chlorine needed to treat a swimming pool is directly proportional to the volume of the pool.

The amount of chlorine needed to treat a swimming pool is directly proportional to the volume of the pool.

• 0.002

• 0.02

• 0.2

• 1/2

The number of campers who sign up for archery each week is listed in the table. If the relationship is proportional, how many campers will sign up for archery in Week 3?

• 54

• 40

• 41

• 39

The relationship between the number of girls who are in the middle school and high school jazz bands is proportional. What is the constant of proportionality?

• 
• 
• 
• 

Which of the following graphs shows a direct variation?

• 
• 
• 
• 

Does the following represents direct variation?

• Yes

• No

Does the following table represent direct variation?

• Yes

• No

Does the following table represent direct variation?

• Yes

• No