1.
An equation of the form
xy
=
k
, where
k
0, is called a(n) _____.
A.
inverse variation
B.
direct variation
C.
proportional variation
D.
inconsistant variation
Hint
2.
Which statement is
not
true about an inverse variation?
A.
If
y
varies inversely as
x
, then
y
is inversely proportional to
x
.
B.
The constant of variation is
.
C.
In the equation
xy
=
k
,
k
is a constant.
D.
The product of the variables is constant.
Hint
3.
Suppose
y
varies inversely as
x
, and
y
= 9 when
x
= -4. What is the constant of variation?
A.
-36
B.
-13
C.
5
D.
36
Hint
4.
Which statement is
not
true about a direct variation?
A.
The constant of variation is
.
B.
y varies directly as
x
.
C.
The graph is straight line.
D.
y
is inversely proportional to
x
.
Hint
5.
Suppose y varies inversely as
x
and
y
= 3 when
x
= 8.
Find
y
when
x
= 4.
A.
1.5
B.
12
C.
2
D.
6
Hint