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ETCP Math 9 Direct and Inverse Variations

Authored by Fritz Arcenas

Mathematics

9th Grade

CCSS covered

Used 107+ times

ETCP Math 9 Direct and Inverse Variations
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following represents direct variation?

y = kx
y = k/x
y = x/k
y = mx + b

Tags

CCSS.HSF.BF.A.1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following represents inverse variation?

y = kx

y = k/x

y = x/k

y = mx + b

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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

40
-40
5
-5

Tags

CCSS.6.EE.C.9

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The width of a rectangle varies inversely with its length.  If the width is 6 when the length is 24, give an equation that shows the relationship.

y = 4x
y = 144x
y = 4/x
y = 144/x

Tags

CCSS.HSF.BF.A.1

CCSS.HSA.CED.A.2

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The number of kilograms of water in a person’s body varies directly as the person’s mass.  A person with a mass of 90 kg contains 60 kg of water.  How many kilograms of water are in a person whose mass is 75 kg?

50 kg water
72 kg water
94 kg water
150 kg water

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.SSE.A.1

CCSS.HSA.REI.B.3

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The interest received on a savings account varies directly with the amount deposited. Daniel received $55.35 in interest on $1230 he deposited. How much interest would Daniel have received if he had deposited $2000 into his account?

34.04
90.00
1,285.35
44,444.44

Tags

CCSS.HSA.CED.A.1

CCSS.HSF.BF.A.1

CCSS.HSA.SSE.A.1

CCSS.HSA.REI.B.3

CCSS.HSF.LE.A.2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

y varies directly with the square of x.  If y=40 when x=4, find y when x = 7

17.5
70
122.5

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

CCSS.HSA.SSE.A.1

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