direct or Inverse 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

What kind of equation is this?
xy=8

• Linear Equation
• Direct Variation
• Inverse Variation
• Joint Variation

Determine the type of variation:

• Direct
• Inverse
• Neither

The equation 
xy =  25  represents:

• direct variation
• inverse variation
• joint variation
• none of these

Which of the following is NOT a direct variation?

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

• direct

• inverse

• none

• direct

• inverse

• none

2x + y = 0 is an example of a direct variation and the constant of variation is _____ (do the math!)

Does the equation show an inverse variation? 
y=10/x

• yes
• no