3.4 Direct Variation

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

• (0, 0)
• (1, 0)
• (0, 1)
• (1, 1)

What is another name for k (the constant of variation)?

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

Tags

CCSS.HSS.ID.C.7

Does this equation represent direct variation?
y=2x

• yes
• no

Which graph shows direct variation between x and y?

• A
• B
• C
• D

Which of the given graphs represents direct variation?

• A
• B
• C
• D

Write the direct variation equation for the table given.

• y = 1/3x
• y = 3x
• y = 1/2x

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

• 26
• 3
• 58.5
• 2

 y varies directly with x, and y is 84 when x is 16. What is the constant of variation?

• y = (21/4)x
• k= 21
• k= 5.25
• k= 4/21