Constant Rate of Proportionality

The Astros hit 6 homeruns in 5 games, 12 homeruns in 10 games, and 24 homeruns in 20 games. What is the constant rate of change

• y=(1/2)x

• y=2x

• y=(5/6)x

• y = 1.2x

What is the constant of proportionality?

• $3

• $4

• $2

• $9

The constant of proportionality in the equation y = ½x is _______. 

• x

• y

• 1/2

• 2

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

Find the constant of Proportionality:

• 5

• 2.5

• 3

• 1.5

Nick walks 8 miles in 3 hours, and Braylon walks 16 miles in 6 hours. What is the unit rate per hour?

• 2.6

• 2

• 3

• 4.6

What is the unit rate in this proportional relationship?

• 60 miles/1 hour

• 120 miles/ 2 hours

• 1 mile/ 1 hour

Which graph is non-proportional?

• A

• B

• C

• D

Write the equation for this table.
K=9

• y=9

• y=9x

• y=1/9

How many pieces are there per ounce?

• 5 pieces

• 0.2 pieces

• 50 pieces

• 60 pieces