6.1 Dilations

6.1 Dilations

Please take notes in your packet throughout the lesson

Multiple Choice

This type of nonridgid motion changes the size of the figure by the same amount for both x and y.

• Dilation

• Compression

• Stretch

Multiple Choice

This type of nonridgid motion makes a figure smaller in just one direction.

• Dilation

• Compression

• Stretch

Multiple Choice

This type of nonridgid motion makes a figure bigger in just one direction.

• Dilation

• Compression

• Stretch

Multiple Choice

A horizontal stretch makes

• just x bigger

• just y bigger

• just x smaller

• just y smaller

Multiple Choice

A horizontal compression makes

• just x bigger

• just y bigger

• just x smaller

• just y smaller

Multiple Choice

A vertical compression makes

• just x bigger

• just y bigger

• just x smaller

• just y smaller

Multiple Choice

A vertical stretch makes

• just x bigger

• just y bigger

• just x smaller

• just y smaller

Multiple Choice

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)

Multiple Choice

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)

Multiple Choice

State the coordinate of the image of the given point G (-10,-6) under a dilation with center at the origin with the given scale factor of 1/2.

• G' (5,3)

• G' (20,12)

• G' (-20,-12)

• G' (-5,-3)

Multiple Choice

Dilate Point B by a scale factor of 3:

• (12,0)
• (12,12)
• (4,3)
• (0,12)

Multiple Choice

Dilate Point B by a scale factor of 1/2

• (1.5,-4)

• (-1.5,1)

• (-1,-1.5)

• (-2,-2)

Multiple Choice

Dilate Point B by a scale factor of 1/2

• (1.5,-4)

• (-1.5,1)

• (-1,-1.5)

• (-2,-2)

Multiple Choice

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

• ½

• ¼

• 4

• 2

Multiple Choice

What is the scale factor from ABCD to MNOP?

• 2/3
• 3/2
• 2
• 3

Multiple Choice

Choose the correct scale factor:

• 2
• 3
• 1/3
• 1/2