RETAKE: Constant of Proportionality

Which equation matches the constant of proportionality?

• x = y

• y = x

• y = kx

• l x w

Which equation helps you solve for k?

• k = x/y

• k = y/x

• k = y + x

• k = 2x

Determine the constant of proportionality for the table.

Express your answer as y = kx

• y = 18x

• y = 22.50x

• y = 18.50x

• y = 22x

Write an equation that represents the proportional relationship.

• y = 2x

• y = 1/2x

• y = 2x + 1

• y = 1/2x + 1

If Justin can type 408 words in 4 minutes, how many words can he type per minute?

• 102 words per minute

• 100 words per minute

• 400 words per minute

• 412 words per minute

Find the unit rate of 624 calories in 3 servings.

• 1,872 calories per serving

• 208 calories per serving

• 624 calories per serving

• 621 calories per serving

Select ALL equations that are proportional.

• y = 3x

• y = 25x

• y = 7x

• y = 2x - 1

• y = 4000x