Dilations TITD

The point (4, 8) has been dilated with a scale factor of 1/4. Graph the image.

Identify the center of dilation.

Identify the image and pre-image.

a

b

Preimage

Image

Scale factor is denoted by the letter (a)   .

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2

In this figure, triangle ABC is the ​ (a)   and triangle A'B'C' is the ​ (b)   . The scale factor for this dilation is ​ (c)   . A(n) ​ (d)   occurred.

• pre-image
• image
• 2
• reduction
• enlargement
• None of the above
• 1/2

Which of the following statements is true about the scale factor (k) for this dilation?

What is the value of the scale factor (k) for a dilation that results in a figure twice the size of the original?

What happens to the size of a figure when the scale factor (k) for a dilation is less than 1?

• The figure becomes larger

• The figure remains the same size

• The figure becomes smaller

If the scale factor (k) for a dilation is 1, what can be said about the size of the resulting figure?

• The figure becomes larger

• The figure remains the same size

• The figure becomes smaller