Constant vs Varying Proportionality

Which equation matches the constant of proportionality?

• x = y

• y = x

• y = kx

• l x w

Select ALL equations that are proportional.

• y = 3x

• y = 25x

• y = 7x

• y = 2x - 1

• y = 4000x

The constant of proportionality is also the unit rate.

• True

• False

Which equation is NOT proportional?

• y = 2x - 3

• y = 150x

• y = 1/2x

Is this table proportional?

• Yes

• No

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.

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 for the table above?

• X=4

• X=3

• X=1/2

• No C.O.P