1.
A dilation with center
C
and a scale factor
k
maps
A
onto
D
and
B
onto
E
. If
AB
= 4 and
DE
= 10, find |
k
|.
A.
B.
C.
6
D.
Hint
2.
Refer to the figure below. A dilation with center
C
produced the circle in red. What is the scale factor of the dilation?
A.
3
B.
C.
2
D.
1
Hint
3.
A square is reduced by a scale factor of
. The area of the image is how many times the area of the preimage?
A.
4
B.
C.
2
D.
Hint
4.
A dilation with center
C
and a scale factor of k maps L to
M
and
P
to
Q
. If
LP
= 12 and
MQ
= 10, find |
k
|.
A.
-2
B.
C.
D.
Hint
5.
A rectangle with length of 4 and width of 5 is enlarged by a scale factor of 3. What is the area of the enlargement?
A.
56 square units
B.
180 square units
C.
60 square units
D.
20 square units
Hint