direct variation

Is this a direct variation?
y=2x

• yes
• no

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

Trina's paycheck earnings varies directly as the number of hours she works. If she works 19 hours and earns $187.15, what should she earn if she worked 40 hours? 

• $394
• $440
• $472.80
• $512.20

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.2

CCSS.7.RP.A.3

A person’s weekly pay is directly proportional to the number of hours worked. Shawn’s pay is $123.00 for 20 hours of work. Find the amount of pay for 31 hours of work. 

• $3813
• $620
• $190.65
• $4.96

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

Which of the given graphs is a direct variation?

• A
• B
• C
• D

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.B.4

Is this proportional?

• yes
• no

Tags

CCSS.8.EE.B.5

CCSS.8.F.B.4

CCSS.8.SP.A.3

Write the equation for the table given.

• y = 1/3x
• y = 3x
• y = 1/2x

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

What is the slope?

• $2/1 mile drive
• $1/2 miles driven
• 2 miles driven/$1 
• 1 mile driven/$2

Tags

CCSS.8.EE.B.5

CCSS.8.F.B.4

CCSS.8.SP.A.3

What does the Direct Variation Equation look like?

• y= kx
• y = mx + b
• y = b
• y = x

Tags

CCSS.8.EE.B.6

Which graph shows a proportional relationship between x and y?

• A
• B
• C
• D

Tags

CCSS.8.EE.B.5

What is another name for k?

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

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3