a) Find the image of the point (-3,3) under a dilation in the origin of scale factor ½.

b) Find the image of the point (-3,3) under a dilation in the origin of scale factor 1.5.

Under a dilation centered in the origin, rectangle A becomes rectangle B.
What is the scale factor for this dilation?

Choose:

2

2½

3

3½

ΔABC has the vertices shown. Find the coordinates of its image, ΔA'B'C', after a dilation of

Choose:

A'(18,18), B'(27,0), C'(9,-9)

A'(3,18), B'(9,0), C'(1,-9)

A'(2,2), B'(3,0), C'(1,-1)

A'(3,3), B'(4.5,0), C'(1.5,-1.5)

ΔABC has A(-2,-2), B(-1,2) and
C(2,1). After a dilation centered at the origin, ΔA'B'C' has A'(-4,-4),
B'(-2,4) and C'(4,2). What is the scale factor of the dilation?

Choose:

-2	2
½	-½

Pentagon ABCDE is shown. What will be the coordinates of the image of D after a dilation of scale factor ½ centered in the origin?
Choose:

(-1, -½)

(-1,½)

(0,-½)

(0,½)

Rectangle ABCD is shown. What are the coordinates of the image of point B after a dilation of scale factor 2 centered in point A?

Choose:

(2,8)	(2,4)
(4,4)	(7,4)

ΔFUN is shown at the right. Find the coordinates of its image ΔF'U'N' under a dilation of 3 centered in the origin.

Choose:

F(-8,2), U(6,8), N(0,-6)

F(-2,½), U(1½,2), N(0,-1½)

F(-12,3), U(9,12), N(3,-9)

F(-12,3), U(9,12), N(0,-9)

Arrow B is the result of one, or more, transformation on arrow A,
as shown at the right.

Which choice describes the transformation(s)?

ΔABC is graphed as shown. What are the coordinates of the vertices of the image ΔA'B'C' after a dilation of scale factor centered in the origin?
Choose:

A(2,9), B(3,0), C(-3,3)

A(4½,9), B(3,0), C(-3,3)

A(4½,9), B(3,1½), C(-3,3)

A(9,18), B(6,0), C(-6,6)

A dilation centered in the origin, O, creates ΔDEF as the image of ΔABC.
a) What is the scale factor for this dilation?
Choose:

¼

½

1½

2