Constant of Proportionality

What is the direct variation?

• y=9/3x

• y=6x

• y=9x

• y=3x

Is this table Proportional?

• Yes, because the constant is different each time.

• No, because the numbers are all different.

• No, because the constant changes each time.

• Yes, because the constant is always 9.

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

• $8 per pound

• $5 per pound

• $35 per pound

• 0.125 pounds per dollar

Is this table proportional or non-proportional?

• Proportional

• Nonproportional

Is this table proportional or non-proportional?

• Proportional

• Nonproportional

Is the given table a proportional relationship? If so, what is the constant of proportionality?

• Yes; 1/3

• Yes; 3

• Yes; 5

• No

What is the constant of proportionality?

• 2 swings / 1 day

• 0.5 swings / 1 day

• 4 swings / 1 day

• None of the above

What is the constant of proportionality for the table above?

• X=4

• X=3

• X=1/2

• No C.O.P

What is the constant of proportionality? 

• 4

• 1/4

• 8

• 1/8

Which tables and graphs show a proportional relationship?

• A,B,D

• A,C,F

• B,D,E

• B,C,F