Recognizing Direct Proportions from a Table

Does this table represent a Direct Proportion? If so, what is the Constant of Proportionality?

• No it is not a direct proportion.

• Yes and the Constant of Proportionality is 1/5

• Yes and the Constant of proportionality is 5

Which of the  tables represent a direct proportion?

• A

• B

• C

• D

How do you determine if a table represents a direct proportion?

• You check a few of the ratios of y/x or output/input to see if they are equal.

• You see if the ratios of input/output or x/y are equal

• You see if they all look to be the same and take a guess.

• You check ALL of the ratios of y/x or output/input and make sure that they are equivalent to the same number.

Does the table represent a Direct Proportion? If so, Identify the Constant of Proportionality (y/x).

• No it is not a direct proportion.

• Yes. The constant is 2.

• Yes. The constant is 8.

• Yes. The constant is 1/2.

• Proportional

• Non-Proportional

Does the table represent a proportional relationship?

• Yes.

• No.

• A

• B

• C

• D

Is this table proportional?

• Yes

• No

Is the table proportional?

• Yes

• No