Direct and Inverse Proportion

In the equation y = 14x, what is the constant of proportionality?

• y
• x
• 14

 Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?

• y=1344x
• y=100x
• y=5.25x
• y=4/21x

Is the given table a direct variation? If so, what is the constant?

• Yes; 1/3
• Yes; 3
• Yes; 5
• No

Name the constant of proportionality.

• 20
• 40
• 16
• 35

Name the constant of proportionality.

• 8
• 16
• 6
• 3

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.

Does the table represent a proportional relationship?

• Yes.
• No.

• A
• B
• C
• D

• 1
• 3

Which picture shows 2/8?

• green
• blue
• purple
• pink