1.
Consider the equation
y
=
kx
. Which statement is
not
true?
A.
y
is called the dependent variable.
B.
x
is called the independent variable.
C.
k
is called the direction.
D.
k
is called the constant of variation.
Hint
2.
Suppose
y
varies directly as
x
and
y
= 42 when
x
= 3. Find
x
when
y
= 70.
A.
5
B.
1.8
C.
2.5
D.
9.8
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.
96 cranes
C.
75 cranes
D.
48 cranes
Hint
5.
If there are 3 feet in 1 yard, how many feet are in 7.8 yards?
A.
2.6 ft
B.
2.2 ft
C.
23.4 ft
D.
14.9 ft
Hint