Constant Rate of Change and Proportionality

The table show's your profit from your summer mowing job. What is the rate of change?

• $10 per hour

• $20 per hour

• $5 per hour

• $12 per hour

Find the Constant Rate of Change.

• 1/3

• 3

• 1/2

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

What is the constant rate of change?

• No Constant Rate of Change

• $80 per month.

• $82 per month.

• $41 per month.

Analyze the point (3, 27). What does the point represent?

• The point (3,27) represents 27 shirts for $3.

• The point (3,27) represents $27 for 3 shirts.

The table shows the cost of long distance calls based on the number of minutes used. Is there a constant rate of change, and if so what is it?

• Yes, 10 calls per minute

• Yes, $.10 per minute

• Yes, $.40 per minute

• Not a constant rate

What is the constant rate of change between the quantities in the table?

• 4 calories per minute

• 15 calories per minute

• 40 calories per minute

• 60 calories per minute

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $35 per pound

• $5 per pound

• $0.125 per pound

A store has 120 customers in 6 hours. What is the unit rate in customers per hour?

• 16 customers per hour

• 12 customers per hour

• 20 customers per hour

• 15 customers per hour

After 3 hours, Ernie had travelled 195 miles. If he travels at a constant speed, how far will he have travelled after 5 hours?

• 400 miles

• 325 miles

• 575 miles

• 650 miles