Performing transformations

True/False: A negative scale factor is always a reduction.

• True

• False

What is the result of dilating a figure with a scale factor of 2?

• The result of dilating a figure with a scale factor of 2 is a reduced figure that is half the size of the original figure.

• The result of dilating a figure with a scale factor of 2 is a figure that is the same size as the original figure.

• The result of dilating a figure with a scale factor of 2 is an enlarged figure that is twice as big as the original figure.

• The result of dilating a figure with a scale factor of 2 is a distorted figure that is not proportional to the original figure.

Figure Y is a dilation of Figure X.Which number best represents the scale factor used to change Figure X into Figure Y?

• 0.25
• 1.5
• 4
• 4.5

Which is a true statement about dilations?

• A dilation will always enlarge a figure.

• A dilation will always produce congruent

  figures.

• A dilation will always produce similar figures.

• A dilation will always change the orientation of

  a figure.

A dilation with a scale factor less than 1 but greater than 0 is a(n) _____.

• Enlargement
• Reduction

What type of transformation is being shown?

• Rotation

• Translation

• Reflection

• Dilation

Triangle DOG has coordinates D (0,0) O (0,4) and G ( 1,5) where is O' after a dilation of scale factor 7

• (7,35)

• (7,28)

• (0,28)

• (0,0)

A dilation of a figure produces

• a similar figure
• a congruent figure

A dilation is which of the following:

• slide

• turn

• enlargement /reduction

• mirror

A figure containing the point A(2, 5) is dilated by a scale factor of 3. What are the coordinates of the point A' in the image?

• (5, 8)
• (2, 5)
• (6, 15)
• (2/3, 5/3)