Direct Variation Warm-Up

Is this a direct variation?

• yes
• no

Is this a direct variation?

• yes
• no

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

• (0, 0)
• (1, 0)
• (0, 1)
• (1, 1)

What is another name for k?

• y- intercept
• x 
• slope
• x- intercept

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What does the Direct Variation Equation look like?

• Y= kx
• y = mx + b
• y = b
• y = x

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

Is this proportional?
y=2x

• yes
• no

Tags

CCSS.7.RP.A.2C

In a direct variation, y=39 when x=3.  Find the value of y when x=2.

• 26
• 3
• 58.5
• 2