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.
Suppose
y
varies directly as
x
and
y
= 42 when
x
= 3. Find
x
when
y
= 70.
A.
5
B.
9.8
C.
2.5
D.
1.8
Hint
3.
Serefina can make 16 paper cranes in 20 minutes. At that rate, how many can she make in two hours?
A.
75 cranes
B.
150 cranes
C.
96 cranes
D.
48 cranes
Hint
4.
Suppose y varies directly as
x
and
y
= -10 when
x
= 5. Find
x
when
y
= 40.
A.
20
B.
-10
C.
10
D.
-20
Hint
5.
If there are 3 feet in 1 yard, how many feet are in 7.8 yards?
A.
14.9 ft
B.
2.6 ft
C.
2.2 ft
D.
23.4 ft
Hint