Understanding Scale Factors

This video tutorial explains how to find the scale factor when scaling figures. It covers the difference between scaling from a small to a large figure and vice versa. The tutorial provides step-by-step calculations for determining the scale factor in both scenarios, using examples to illustrate the process. Key points include recognizing that a scale factor greater than one indicates an increase in size, while a scale factor less than one indicates a decrease.

What is the primary focus of this video tutorial?

• Studying the history of mathematics

• Exploring algebraic equations

• Learning about geometric shapes

• Understanding scale factors and their application

When scaling from a small figure to a large figure, what is the expected value of the scale factor?

• Zero

• Equal to one

• Less than one

• Greater than one

If a rectangle is 7.5 meters tall and needs to be scaled to 10 meters, what is the scale factor?

• 2.0

• 0.75

• 1.3 repeating

• 1.5

What is the scale factor when scaling down from a large figure to a small figure?

• Less than one

• Zero

• Equal to one

• Greater than one

If a rectangle is 10 meters tall and needs to be scaled down to 7.5 meters, what is the scale factor?

• 1.3 repeating

• 0.75

• 1.5

• 2.0

In the additional example, what is the scale factor when scaling from 4 to 5?

• 2.0

• 1.5

• 1.2

• 0.8

What is the scale factor when scaling down from 15 to 12?

• 2.0

• 1.5

• 1.2

• 0.8

What is the scale factor when scaling from 5 to 4?

• 2.0

• 1.5

• 1.2

• 0.8

What should you remember about scale factors when creating a larger figure?

• The scale factor is less than one

• The scale factor is equal to one

• The scale factor is greater than one

• The scale factor is zero

What should you remember about scale factors when creating a smaller figure?

• The scale factor is zero

• The scale factor is greater than one

• The scale factor is equal to one

• The scale factor is less than one