Direct variation

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

• 26
• 3
• 58.5
• 2

Tags

CCSS.HSF-LE.A.1B

 y varies directly with x, and y is 16 when x is 32. Which equation represents this situation?

• y=32x
• y=16x
• y=2x
• y=(1/2)x

Tags

CCSS.8.EE.B.6

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.HSF-LE.A.1B

Is this a direct variation?

• yes
• no

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSF.BF.A.1

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

Is this a direct variation?

• yes
• no

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.B.4

CCSS.8.SP.A.3

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

• (0, 0)
• (1, 0)
• (0, 1)
• (1, 1)

Tags

CCSS.8.EE.B.6

CCSS.8.F.B.4

What is another name for k?

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

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

 Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?

• y=1344x
• y=100x
• y=5.25x
• y=4/21x

Tags

CCSS.8.EE.B.6

CCSS.8.F.B.4

If y = 15 when x = 12 find y when x = 32.

• y = (5/4)x; 40
• y= (4/5)x; -40
• y= 4x; 5
• y= 5x; -5

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

If y =4 when x = -4, find y when x =7.

• y= x, 7
• y= -x; 7
• y = -x; -7
• y= x; -7

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2