Transformations

Warm Up 1/28/21

A scale factor of 1/2 reduces a figure.

• True

• False

True or False. Dilated figures produce congruent figures.

• True

• False

 $.75$  Scale Factor. Will it Reduce, Enlarge, or Preserve?

• Reduce (make smaller, shrink)

• Enlarge (make bigger, grow)

• Preserve (stay the same)

Does the image show a Dilation and what is the scale factor?

• Yes; k = 2

• Yes; k = 1/2

• No, it's a translation.

• No, it's a reflection.

Which of the following algebraic expression would create an enlargement?

• (x,y) -----> (x+3,y+3)

• (x,y) -----> (-2x,-2y)

• (x,y) -----> (0.75x,0.75y)

• (x,y) -----> (2.3x,2.3y)

What is the transformation for the following equation:

y = .75|x|

• Vertical Compression

• Vertical Stretch

A scale factor of 5 makes the shape smaller after a dilation.

• True

• False

A dilation changes the __________ of a figure.

A dilation is which of the following: 

• only an enlargement
• only a reduction
• either an enlargement or a reduction
• neither an enlargement nor a reduction

If a dilation has a scale factor of 4.5, it can be classified as a(n) ___.

• enlargement

• reduction