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Direct and Inverse Variation Test

Authored by Cortney Strickland

Mathematics

8th - 9th Grade

CCSS covered

Used 4+ times

Direct and Inverse Variation Test
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25 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 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.HSA.CED.A.2

CCSS.HSA.CED.A.1

CCSS.HSA.SSE.A.1

CCSS.HSF.LE.A.2

CCSS.HSF.BF.A.1

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Is the given table a direct variation? If so, what is the constant of variation?

Yes; 1/3
Yes; 3
Yes; 5
No

Tags

CCSS.HSA.CED.A.2

CCSS.HSF.LE.A.2

CCSS.HSS.ID.C.7

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which of the given graphs is a direct variation?

A
B
C
D

Tags

CCSS.8.EE.B.5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What kind of equation is this?
xy=8

Linear Equation
Direct Variation
Inverse Variation
Joint Variation

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.SSE.A.1

CCSS.HSA.REI.D.10

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Is the given table a direct or inverse variation? What is the constant of variation?

Direct, 12
Inverse, 12
Direct, 1/12
Inverse, 1/12

Tags

CCSS.HSA.CED.A.2

CCSS.HSF.LE.A.2

CCSS.HSF.IF.B.4

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The number of hours to paint a house varies inversely with the number of painters working. A 2400-square foot house can be painted in 27 hours by 6 painters. How many painters would need to work in order to paint the house in 18 hours?

8 painters
10 painters
9 painters
11 painters

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.CED.A.1

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Boyle’s Law states that, for a fixed amount of gas, the volume of the gas at a constant   temperature is inversely proportional to the pressure. If a certain gas occupies 9.84 liters   at a pressure of 50 centimeters of mercury (cm Hg), what is the approximate pressure   when the volume is increased to 12 liters?

39.8 cm Hg
41.0 cm Hg 
43.2 cm Hg
45.1 cm Hg

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

CCSS.HSA.CED.A.4

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