Dilations and Scale Factor

Front

What is the scale factor?

Back

The scale factor is a number that describes how much a figure is enlarged or reduced during a dilation.

Tags

CCSS.8.G.A.3

Front

Definition: The figure before a transformation has occurred.

Back

Pre-image

Tags

CCSS.HSG.CO.A.2

Front

In a dilation, what mathematical operation is used with the scale factor?

Back

Multiplication

Tags

CCSS.8.G.A.3

Front

Definition: The figure after a transformation has occurred.

Back

Image

Tags

CCSS.HSG.CO.A.2

Front

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

Back

1/4

Tags

CCSS.8.G.A.3

Front

What does a scale factor of 1 mean in a dilation?

Back

A scale factor of 1 means the figure remains the same size; it is neither enlarged nor reduced.

Tags

CCSS.8.G.A.3

Front

If the scale factor is greater than 1, what happens to the figure?

Back

The figure is enlarged.

Tags

CCSS.8.G.A.3

Front

If the scale factor is less than 1 but greater than 0, what happens to the figure?

Back

The figure is reduced.

Tags

CCSS.8.G.A.3

Front

What is the relationship between the pre-image and image in a dilation?

Back

The image is the result of applying the scale factor to the pre-image.

Tags

CCSS.8.G.A.3

Front

How do you find the scale factor when given the coordinates of the pre-image and image?

Back

Divide the coordinates of the image by the coordinates of the pre-image.

Tags

CCSS.7.G.A.1