Dilations

A dilation is which of the following: 

• only an enlargement
• only a reduction
• Either an enlargement or a reduction
• Neither an enlargement or a reduction

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 of 2.

• B' (2 , 4.5)

• B' (-8 ,-18)

• B' (8 ,18)

• B' (9 ,4)

What scale factor was used to produce the image?

• 2
• -2
• ¹/₂
• 1

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

A scale factor of 1/2 reduces a figure.

• True
• False

In a dilation what mathematical operation is used with the scale factor?

• addition 
• subtraction 
• multiplication 
• division 

A dilation can produce a smaller figure also known as a ______

• reduction
• enlargement
• scale factor
• center of dilation

 A dilation can produce a larger figure also known as a ______

• reduction
• enlargement
• scale factor
• center of dilation