Variation

Variation

7th - 10th Grade

10 Qs

quiz-placeholder

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Variation

Variation

Assessment

Quiz

Mathematics

7th - 10th Grade

Practice Problem

Medium

Created by

Janna Christina Cansana

Used 113+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The cost c varies directly as the number n of pencils is written as

c=knc=kn

k=cnk=cn


n=kcn=\frac{k}{c}

c=knc=\frac{k}{n}

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The speed r of a moving object is inversely proportional to the time t travelled is written as

r=ktr=kt

r=ktr=\frac{k}{t}

t=krt=kr

rk=r\frac{r}{k}=r

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which is an example of a direct variation?

xy=10xy=10

y=2xy=\frac{2}{x}

y=5xy=5x

2y=x\frac{2}{y}=x

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A car travels a distance of d km in t hours. The formula that relates d to t is d = kt. What kind of variation is it?

direct

inverse

joint

joint

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

y varies directly as x and y = 32 when x = 4. Find the constant of variation.

8

36

28

128

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What happens to T when h is doubled in the equation T = 4h?

T is halved

T is tripled

T is doubled

T becomes zero

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If y varies directly as x and y = 12 when x = 4, find y when x = 12.

3

4

36

48

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