Constant of Proportionality

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

• y
• x
• 14
• 1/14

Find the unit rate of 624 calories in 3 servings.

• 1,872 calories per serving
• 208 calories per serving
• 624 calories per serving
• 621 calories per serving

A recipe calls for 3/4 cup of brown sugar for every 3 eggs. What is the unit rate of eggs per cup? 

• 1 cup per egg
• 2 cups per egg
• 3 eggs per cup
• 4 eggs per cup

Write the equation for the table given

• y = 1/3x
• y = 3x
• y = 1/2x

What is the constant of proportionality for this table?

• $1/9 per hour
• $9 per hour
• $8 per hour

Is this graph proportional?

• Yes
• No

Is this graph proportional?

• Yes
• No

Is this table proportional?

• Yes
• No

Write an equation for this relationship.

• y = 18x
• y = 18.50x
• y = 22.50x
• y = 22x

Craig earns extra money as a lifeguard. He earns $37 for 4 hours and $64.75 for 7 hours.  What is the constant of proportionality? 

• $37 per hour
• $64.75 per hour
• $9.25 per hour
• $18.50 per hour