Understanding Dilations

What are the two main types of dilations?

• Enlargement and reduction

• Translation and rotation

• Reflection and symmetry

• Scaling and skewing

If a photo is reduced from 480x640 pixels to 120x160 pixels, what is the scale factor?

• 1/4

• 1/5

• 1/3

• 1/2

What happens to a figure when the scale factor is greater than 1?

• It becomes distorted

• It enlarges

• It remains the same

• It reduces in size

How do you find the new coordinates of a point after dilation with a scale factor of 4?

• Add 4 to each coordinate

• Subtract 4 from each coordinate

• Multiply each coordinate by 4

• Divide each coordinate by 4

What is the result of applying a scale factor of 1/2 to a figure?

• The figure doubles in size

• The figure becomes distorted

• The figure remains the same

• The figure is reduced to half its size

When graphing a figure with a scale factor of 3, what should you expect?

• The figure will shrink

• The figure will enlarge

• The figure will remain unchanged

• The figure will rotate

How do you calculate the scale factor of a dilation in photography?

• Divide the original size by the new size

• Multiply the original size by the new size

• Subtract the original size from the new size

• Divide the new size by the original size

What is the scale factor if a grain of sand appears 45 times larger under a microscope?

• 1/45

• 90

• 1/90

• 45

Lucas wants to enlarge a 3x5 photo to a 7.5x12.5 photo. What is the scale factor?

• 2.5

• 2

• 3

• 1.5

What is the key formula for finding the scale factor?

• Original size divided by dilation

• Dilation divided by original size

• Original size multiplied by dilation

• Dilation multiplied by original size