Direct Variation/ Constant of Proportionality

Which of the given graphs is a direct variation?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

Write the equation for the table given.

• y = 1/3x
• y = 3x
• y = 1/2x

Tags

CCSS.6.EE.C.9

What ordered pair does a direct variation always go through when graphed?

• (0, 0)
• (1, 0)
• (0, 1)
• (1, 1)

Is this a direct variation?

• yes
• no

A dishwasher uses 65 gallons of water to wash 5 loads of dishes. What is the constant of variation?

• k = 13
• k = 65
• k = 5
• k = 1/13

Tags

CCSS.HSF-LE.A.1B

What is the constant of proportionality? 

• 3
• 10
• 30
• 1/10

Tags

CCSS.7.RP.A.2B

What is the constant of proportionality? 

• 1/3
• 3
• 5
• 10

Tags

CCSS.7.RP.A.2B

A graph has the equation y=14x. Which of the following is the constant of proportionality?

• 14
• x
• y
• 1/14

Tags

CCSS.7.RP.A.2B

A proportional relationship can be written as an equation in the form ____ = _____  _____

• y = k+x
• y = k-x
• y = kx
• y = k/x

Tags

CCSS.7.RP.A.2C

What is the equation that represents this relationship?

• y = 1/12x

• y = 12x

• y = 0.6x

• This is not a proportional relationship.

Tags

CCSS.8.EE.B.5