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CONSTANT OF PROPORTIONALITY

Total questions: 10

Worksheet time: 11mins

Name
Class
Date
1.
What does k represent in the equation y = kx?
a)
constant rate of change
b)
constant of proportionality
c)
the equation
d)
x/y
2.

What is the constant of proportionality that relates y, the total cost in dollars, to x, the number of tickets purchased?

a)

4.00

b)

0.25

c)

1.00

d)

0.10

3.

A recipe says to use 3 cups of flour to make 48 cookies. What is the constant of proportionality that relates the number of cookies made, y, to the number of cups of flour used, x?

a)

0.6

b)

48

c)

3

d)

16

4.

There is a proportional relationship between the amount of time (in minutes). Latrell spends folding, x, and the number of bedsheets he folds, y.

What is the constant of proportionality? Write your answer as a whole number or decimal.

5.

What is the constant of proportionality for the following graph?

a)
A 160
b)
B 80
c)
C 0
d)
D 40
6.

At a local grocery store, a 3-lb bag of almonds cost $13.56 and an 8-lb bag of the same type of almonds costs $36.16. What is the constant of proportionality between the cost and weight for each pound of almonds?

a)

$4.52

b)

$12.06

c)

$5.00

d)

$1.70

7.

Identify the constant of proportionality.

a)

k = 2x

b)

k = 2

c)

k = 4

d)

none (not proportional)

8.

Identify the constant of proportionality.

a)

k = 6

b)

k = 12

c)

k = 1/6

d)

k = 1/12

e)

none (not proportional)

9.
A proportional relationship can be written as an equation in the form ____ = _____  _____
a)
y = k+x
b)
y = k-x
c)
y = kx
d)
y = k/x
10.

Mario bought a 24-pack of toilet paper for $12.72. What is the constant of proportionality that relates the cost of toilet paper, y, to the number of rolls, x?

a)

$1.88

b)

$11.28

c)

$0.53

d)

$36.72