Direct Variation Review

Does the relationship represent direct variation?

• Yes
• No

Is this a direct variation?
y=2x

• yes
• no

Which of the given graphs is a direct variation?

• A
• B
• C
• D

Is the following graph direct, inverse, or neither?

• Direct
• Inverse
• Neither

Determine if the relationship between the two quantities is a direct variation. Explain your reasoning.

• yes, the constant of variation is 1/2

• yes, the constant of variation is 2

• no, there is constant of variation.

Is this relationship a direct variation? If so state the constant of variation.

• Yes; k=40

• Yes: k=5

• Yes; k=4

• No

Is the relationship a direct variation? If so, state the constant of variation.

• Yes; 3

• Yes; 1/3

• Yes; 5

• No

Which of the following is NOT a direct variation?

• y = -2x
• y = 1/2x
• 2x + 3y = 2
• 3y = 4x

Write the equation for the table given.

• y = 1/3x
• y = 3x
• y = 1/2x

Write an equation for this relationship.

• y=4x
• y=1/8x
• y=1/4x
• y=8x