Exit Ticket: Direct Variation

Which of the following represents direct variation?

• y = kx

• y = k/x

• y = x/k

• y = mx + b

Is this a direct variation?
y=2x

• yes

• no

Which of the given graphs is a direct variation?

• A

• B

• C

• D

What is another name for k?

• y- intercept

• x 

• slope

• x- intercept

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

• 26

• 3

• 58.5

• 2

If y vaires directly with x and y= 12 when x= 15. What is the value of x when y= 16?

• 12.8

• 20

• 11.25

• 19