1.
A linear function that can be written in the form
y
=
kx
, where
k
0, is called a(n)_______.
A.
direct variation
B.
functional variation
C.
variable variation
D.
equivalent variation
Hint
2.
The cost of a container of building staples varies directly as the weight in pounds. Suppose 2 pounds of staples costs $3.60. What is the cost of 5 pounds of staples?
A.
$9.00
B.
$1.40
C.
$5.25
D.
$35.00
Hint
3.
Which is the graph of
y
= -3
x
A.
B.
C.
D.
Hint
4.
Serefina can make 16 paper cranes in 20 minutes. At that rate, how many can she make in two hours?
A.
150 cranes
B.
48 cranes
C.
96 cranes
D.
75 cranes
Hint
5.
Suppose y varies directly as
x
and
y
= -10 when
x
= 5. Find
x
when
y
= 40.
A.
-10
B.
20
C.
10
D.
-20
Hint