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

When A(3, 6) is under a dilation of 2 what are the coordinates of A'?

• (3, 6)

• (1.5, 3)

• (6, 12)

• (12, 6)

Dilate the figure by a scale factor of 3. 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 rule (x, y) --> (1/2x, 1/2y) will produce what type of image?

• Similar figure that is an enlargement

• Similar figure that is a reduction

• Congruent figure

• None

What scale factor was used to produce the image?

• 2
• -2
• ¹/₂
• 1

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

What is the scale factor for the given dilation?

• 2
• 3
• 1/3
• 1/2

If Triangle ABC is dilated using a scale factor of 1/2, what will be the coordinates of C'?

• (-1, -2.5)
• (12, 6)
• (3, -1.5)
• (0, 1.5)

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

• True
• False