Direct and Inverse Variation Graphs

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

The equation 
xy =  25  represents:

• direct variation

• inverse variation

• joint variation

• none of these

Which of the following represents indirect variation?

• y = kx

• y = k/x

• y = x/k

• y = mx + b

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

When dealing with direct and inverse variation, the K represents what?

• Kangaroo

• K-Mart's Blue Light Special

• Constant

• King Cobra Snake

Tags

CCSS.HSF-LE.A.1B

What is the constant of variation and the slope?

• -3

• 0

• 3

• 2

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Which of the following is NOT a direct variation?

• y = -2x

• y = 1/2x

• 2x + 3y = 2

• 3y = 4x

Is this a direct variation?
y=2x

• yes

• no

Given that y varies inversely with x, if x =7 and y = 4, what is y when x = 2?

• 14

• 10

• 2

• -14