Direct Variation Equation Graph Table

Which of the following is the equation format for direct variation?

• y = mx + b

• y = kx

What does "k" stand for in the direct variation equation?

• constant of equality

• constant of proportionality

• constant of non-proportionality

The phrase "y varies directly with x" means a relationship is a direct variation.

• True

• False

If there is no constant of proportionality, k, then the relationship is NOT a direct variation.

• True

• False

Write the direct variation equation for the table given.

• y = 1/3x

• y = 3x

• y = 1/2x

This relationship ​ (a)   show direct variation. The constant of variation is ​ (b)   .

• No

• does

• 6

• 1

This relationship ​ (a)   show direct variation. The constant of deviation is ​ (b)   .

• No

• does

• 6

• 1

Write the equation for the table given.

• y = 1/3x

• y = 3x

• y = 1/2x

Does the relationship represent direct variation?

• Yes

• No

What is the equation for the given relationship in the table?