Question 1

If y varies directly as x, illustrated by y = kx, what is this type of variation?

Accepted Answer

Direct

Answer

Joint

Answer

Inverse

Answer

Combined

Question 2

The length (L) of the pendulum is directly proportional to the square of the time (t) it takes to swing from one side to the other. Which mathematical equation can be applied to this situation?

Accepted Answer

Answer

Answer

Answer

Question 3

If a varies directly as b, and a = 12 when b = 3, what is the equation of variation?

Accepted Answer

Answer

Answer

Answer

Question 4

What mathematical symbol best describes the relationship of the values of x and y in the table?

Accepted Answer

Answer

Answer

Answer

Question 5

A mailman can sort out 738letters in 6 hours. If the number of letters varies directly as the number ofworking hours, how many letters can be sorted on 9 hours?

Accepted Answer

1107

Answer

6642

Answer

123

Answer

738

Question 6

The number of days needed in repairing a house varies inversely as the number of men working. It takes 15days for 2 men to repair the house. How many men are needed to complete the job in 6 days?

Accepted Answer

5

Answer

4

Answer

7

Answer

6

Question 7

How do the pressure of gas varies with the temperature and volume if $P=\frac{kt}{v}$

, where P is the pressure, k is the constant of variation, and t is the temperature?

Accepted Answer

The pressure of gas varies directly with the temperature and inversely with the volume

Answer

The pressure of gas varies directly with the volume and inversely with the temperature

Answer

The pressure of gas varies jointly with the temperature and volume

Answer

The pressure of gas varies inversely with the temperature as well as with the volume

Question 8

Describe the relationship $P=\frac{kt}{v}$

Accepted Answer

$P=kt^2$ varies directly as $a$ and inversely as $b$

Answer

$P=kt^2$ varies jointly as $a$ and $b$

Answer

$P=kt^2$ varies inversely as $a$ and $b$

Answer

$P=kt^2$ varies directly as $a$ and $b$

Question 9

Which of the following equations will illustrate the given graph?

Accepted Answer

Answer

Answer

Answer

Question 10

Find the constant of variation if $P=\frac{kt}{v}$ varies directly as $b$ and $y=32$ when $x=4$

Accepted Answer

8

Answer

36

Answer

128

Answer

28

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