Dilation

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

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

• Yes, enlarge

• Yes, reduce

• No

Dilate Point B by a scale factor of 3:

• (12,0)

• (12,12)

• (4,3)

• (0,12)

Is the following a dilation?

• Yes

• No

The scale factor for this dilation is:

Mathematical Equivalence

ON

Dilate Point C by a scale factor of 3:

• (12,0)

• (12,12)

• (1, 2/3)

• (9, 6)

Is this an enlargement or a reduction?

• Enlargement

• Reduction

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

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

• True

• False