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