Dilations (Mash Up Math Video)

What is a dilation?

• A change in orientation

• A change in shape

• A stretch or shrink of an image

• A change in size

Tags

CCSS.8.G.A.3

What does a scale factor of 1 represent?

• No change in the image

• A stretch of the image

• A shrink of the image

• A change in shape

Tags

CCSS.8.G.A.3

When is an image stretched to a larger size?

• When the scale factor is greater than 1

• When the scale factor is less than 1

• When the scale factor is equal to 1

• When the scale factor is equal to 0

Tags

CCSS.8.G.A.3

What happens to the image when the scale factor is less than 1?

• It is stretched to a larger size

• It is shrunk to a smaller size

• It is rotated

• It is reflected

Tags

CCSS.8.G.A.3

What are the coordinates of the new point P' after dilating point P with a scale factor of K?

• Multiply the scale factor by the X-coordinate

• Multiply the scale factor by the Y-coordinate

• Multiply the scale factor by both the X and Y coordinates

• Divide the scale factor by both the X and Y coordinates

Tags

CCSS.8.G.A.3

What is the scale factor for a dilation that shrinks the image to one-third its size?

• 1

• 2

• 1/2

• 1/3

Tags

CCSS.8.G.A.3

What are the coordinates of the new point H' after dilating point H with a scale factor of 1/3?

• -3, 1

• -9, 3

• 3, 1

• 9, 3

Tags

CCSS.8.G.A.3

What is the result of a dilation when the scale factor is greater than 1?

• The image is stretched to a larger size

• The image is shrunk to a smaller size

• The image is rotated

• The image is reflected

Tags

CCSS.8.G.A.3

What is the result of a dilation when the scale factor is less than 1?

• The image is stretched to a larger size

• The image is shrunk to a smaller size

• The image is rotated

• The image is reflected

Tags

CCSS.8.G.A.3

What is the restriction on stretching out a figure to a larger size?

• There is no restriction

• The scale factor must be greater than 1

• The scale factor must be less than 1

• The scale factor must be equal to 1

Tags

CCSS.8.G.A.3