Direct Variation

The value of y varies directly with x.  Which function represents the relationship between x and y if y = 14 when x = 6. 

• y=20x
• y=84x
• y=7/3x
• y=3/7x

Tags

CCSS.8.F.B.4

CCSS.8.F.A.1

Is this a direct variation?
y=2x

• yes
• no

Tags

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.1

Is this a direct variation?  y =2x + 1

• Yes
• No

Tags

CCSS.8.EE.B.5

Which of the given graphs is a direct variation?

• A
• B
• C
• D

Tags

CCSS.8.F.B.4

CCSS.8.EE.B.6

CCSS.8.EE.B.5

Write an equation for this relationship.

• y=4x
• y=1/8x
• y=1/4x
• y=8x

Tags

CCSS.6.EE.C.9

Write an equation for this situation.

• y=9.75x
• y=19x
• y=19.25x
• y=9.5x

Tags

CCSS.6.EE.C.9

Write the equation for the table given.

• y = 1/3x
• y = 3x
• y = 1/2x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

What does the Direct Variation Equation look like?

• y= kx
• y = mx + b
• y = b
• y = x

Tags

CCSS.8.EE.B.6

What is the constant of proportionality?

• 8
• 16
• 24
• 2

Tags

CCSS.7.RP.A.2B

Is this proportional?
y = 7x + 3

• yes
• no

Tags

CCSS.7.RP.A.2D