Dilations

A dilation is which of the following: 

• only an enlargement
• only a reduction
• either an enlargement or a reduction
• neither an enlargement nor a reduction

Did the image enlarge, reduce or none of the above?

• Enlarge
• Reduce
• None of the above

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

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?
A(3,3) B(6,6) C(9,3)

• A'(9,9) B'(18,18) C'(27,9)
• A'(6,6) B'(9,9) C'(12,6)
• A'(0,0) B'(3,3) C'(6,0)
• A'(1,1) B'(2,2) C'(3,1)

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

• ½
• ¼
• 4
• 2

Dilate Point B by a scale factor of 1/2

• (1.5,-4)
• (-1.5,1)
• (-1,-1.5)
• (-2,-2)

When a dilation has a scale factor greater than one, the dilation is an enlargement.

• True
• False

When the scale factor of a dilation is less than one, the dilation is a reduction.

• True
• False