Direct, Inverse and Joint Variation

What does the Direct Variation Equation look like?

• y= kx

• y = mx + b

• y = b

• y = x

Which of the given graphs is a direct variation?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

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

• Yes; 1/4

• Yes; 4

• Yes; 2

• No

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

• (0, 0)

• (1, 0)

• (0, 1)

• (1, 1)

True or False:
An inverse variation is always a curve and a direct variation is always a line?

• True

• False

What is the constant (k) in this inverse variation?
y = 400/x

• x

• y

• 400

• Not enough information given

Tags

CCSS.HSF-LE.A.1B

What is the constant of variation and the slope?

• -3

• 0

• 3

• 2

Tags

CCSS.8.EE.B.5

Which of the following is NOT a direct variation?

• y = -2x

• y = 1/2x

• 2x + 3y = 2

• 3y = 4x

• direct variation
• inverse variation
• neither direct nor inverse variation

For direct variation, you ______.

• Add

• Subtract

• Multiply

• Divide