Dilations

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure.

• reduction

• enlargement

• scale factor

• center of dilation

The point A (8, 12) was dilated to become point A' (2, 3). What was the scale factor?

• ½

• ¼

• 4

• 2

If your SF = 6/5, what type of dilation is it?

• Reduction

• Enlargement

Dilate Point B by a scale factor of 3:

• (12,0)

• (12,12)

• (4,3)

• (0,12)

Does the image show a Dilation? If yes, did the image enlarge, reduce or none of the above?

• Yes, enlarge

• Yes, reduce

• No

What scale factor was used to produce the image?

• 2

• 3

• 1/3

• 1/2

What scale factor was used to produce the image?

• 1

• 7

• 18

• 49

State the coordinate of the image of the given point B (4,9) under a dilation with center at the origin with the given scale factor r = 2.

• (2,4.5)

• (-8,-18)

• (8,18)

• (9,4)

State the coordinates of the image of point C after a dilation with a scale factor of 1/2 and center point P.

• (-6, 1)

• (-3, -2)

• (1, -6)

• (-2, -3)

State the coordinates of the image of point B after a dilation with a scale factor of 2 and centered at point A.

• (-4,2)

• (-8,4)

• (-4,6)

• (-2,-2)