Direct and inverse proportion

y is directly proportional to x. y=2 when x=4, which of the following is the correct equation connecting y and x.

• $y=\frac{x}{2}$

• $y=2x$

• $y=4x$

Tags

CCSS.HSA.CED.A.2

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

Y varies directly as x. If y = 12 when x = 15, what is y when x = 20?

• 4/5

• 17

• 16

• 25

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

Which equation exhibits a direct proportion?

• y = 5x - 2

• y = 3/4 x

• y - x = 4

• x = 6

Tags

CCSS.8.EE.B.5

CCSS.8.F.A.3

CCSS.8.F.B.4

Is this a direct proportion?

y=2x

• yes

• no

Which of the given graphs is a direct proportion?

• A

• B

• C

• D

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

What kind of relation exists between y and x ?

 $y=\frac{8}{x}$  

• Linear equation

• Direct proportion

• Inverse proportion

• Joint variation

Which graph represents an inverse proportion relationship?

• 
• 
• 
• 

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Given that y is inversely proportional to x, what is the general equation?

• 
• 
• 
• 

Tags

CCSS.HSA.CED.A.2

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.2

Which statement best describes an inverse proportion relationship between y and x?

• y increases then x will decrease

• y increases then x will increase

• y increases then x will remain the same

• y decreases then x will decrease

Tags

CCSS.7.RP.A.2

6 men can paint a building in 15 days. Find the number of days taken for 5 men to paint the same building.

• 10

• 14

• 18

• 22

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.2

CCSS.7.RP.A.3