4.5 Dilations

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure. #7

If the scale factor is k >1, the image will be __________ than the pre-image.

When a dilation has a scale factor greater than one, the dilation is an enlargement.#5

State the coordinate of the image of the given point G (-10,-6) under a dilation with center at the origin with the given scale factor of 1/2. #8

Which could be the rule used to dilate ABC to A'B'C'?

(NOT ON THE PACKET)

What scale factor was used to produce the image?

Scale Factor=Image/Pre-image

Which of these are not preserved by a dilation? #16

Where is the center of dilation? #15

The center of dilation is important because.. (NOT ON THE PACKET)

A dilation is given by the transformation (x, y) → (2.5x, 2.5y). What is the scale factor?

The larger nail is a dilation of the smaller nail. Select ALL statements that are true. #31

State the coordinate of the image of the given point B (4,9) under a dilation with the center at the origin with the given scale factor of 2. #3

State the coordinate of the image of the given point G (-10,-6) under a dilation with the center at the origin with the given scale factor of 1/2. #8

Choose the correct scale factor: #14

Is this an enlargement or reduction? Find the scale factor! #17

A line segment is dilated by a scale factor of 2 centered at a point, not on the line segment. Which statement regarding the relationship between the given line segment and its image is true? #22