VARIATIONS

State what type of variation the equation represents.

• Direct

• Inverse

• Joint

• None

If x varies inversely as v, and x = 35 when v = 3, find x when v = 15.

• 7

• 9

• 5

• 21

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 number of hours to paint a house varies inversely with the number of painters working. A 2400-square foot house can be painted in 27 hours by 6 painters. How many painters would need to work in order to paint the house in 18 hours?

• 8 painters
• 10 painters
• 9 painters
• 11 painters

Write an equation

The cost C of fish varies directly as its weight w in kilogram.

• C =kw

• W=kc

• K= Cw

• K =w/c

Tags

CCSS.HSF-BF.A.1A

Write an equation

The distance D travelled by a car is directly proportional to its speed s.

• S=kd

• D=k/s

• D=ks

• K=Ds

Tags

CCSS.6.EE.C.9

What is the constant in the equation y=5k?

• 5

• 4

• 3

• 2

Tags

CCSS.HSF-LE.A.1B

if y varies directly as x, and y=30 and x=5. What is the constant of the variation?

• 3

• 6

• 9

• 12

What type of variation does this scenario represent?
The length of time you charge your cell phone
and the battery power 

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

What type of variation does this scenario represent?
The outside temperature
and the number of layers of clothes you need to wear outside to feel comfortable 

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