1.
An equation of the form
xy
=
k
, where
k
0, is called a(n) _____.
A.
proportional variation
B.
inconsistant variation
C.
inverse variation
D.
direct 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 product of the variables is constant.
C.
In the equation
xy
=
k
,
k
is a constant.
D.
The constant of variation is
.
Hint
3.
Suppose
y
varies inversely as
x
, and
y
= 9 when
x
= -4. What is the constant of variation?
A.
5
B.
36
C.
-36
D.
-13
Hint
4.
Which statement is
not
true about a direct variation?
A.
y
is inversely proportional to
x
.
B.
y varies directly as
x
.
C.
The graph is straight line.
D.
The constant of variation is
.
Hint
5.
The formula for the area of a rectangle is
A
=
lw
. The two rectangles have the same area. Find the length of the second rectangle.
A.
12 m
B.
4 m
C.
6 m
D.
24 m
Hint