DIRECT AND INVERSE VARIATIONS (QUIZ #1)

In a direct variation, as x increases, y ___________.

• decreases

• increases

• is constant

• disappears

In an inverse variation, as x increases, y ___________.

• decreases

• increases

• is constant

• disappears

If y varies inversely as x, and y = 4 when x = 4, what is the constant of variation?

• 12

• 16

• 18

• 22

If y varies inversely as x, and y = 6 when x = 3, what is the constant of variation?

• 12

• 16

• 18

• 22

If y varies directly as x, and y = 6 when x = 3, what is the constant of variation?

• 1

• 2

• 3

• 4

What letter is used to represent the constant of variation?

• a

• c

• k

• z

Which of the following is the correct expression for the phrase "m is directly proportional to p?

• p = km

• k = pm

• p = mk

• m = kp

y varies directly as x and y = 8 when x = 2. Find y when x = 6.

• 24

• 36

• 48

• 16

Y varies inversely as x. If y = 16 when x = 2, find y when x = 4.

• 4

• 6

• 8

• 12

BONUS QUESTION:

How old is your math teacher?

• 27

• 28

• 29

• 30