Big Ideas Chapter 9 Geometry

• 34

• 15

• 11

• 8

Reflect Point C over the y-axis:

• (-3, 2)

• (3,2)

• (-2,3)

• (3,0)

Choose the correct scale factor from the preimage to the image:

• 2

• 3

• 1/3

• 1/2

Is the dilation from A to B an enlargement or a reduction?

• enlargement

• reduction

What is the scale factor of the dilation from A to B ?

• 1/4

• 1/2

• 1

• 2

What is the scale factor of the dilation from A to B ?

• 2

• 1

• 1/2

• 1/3

Which of the statements is true about the graphed triangles from the preimage to the image?

• They are similar, because the image can be obtained by dilating the preimage about the origin with a scale factor of 2.

• They are similar, because the image can be obtained by dilating the preimage about the origin with a scale factor of 1/2.

• They are not similar, because the image can not be obtained by dilating the preimage about the origin with a scale factor of 2.

• They are not similar, because the image can not be obtained by dilating the preimage about the origin with a scale factor of 1/2.

What is the rule for the dilation pictured below?

• (x, y) → (½x, ½y)

• (x, y) → (x + 2, y + 2)

• (x, y) → (2x, 2y)

• (x, y) → (2x, 3y)

Name the series of transformations that maps ABC onto DEF

• reflect over x then translate left 6 up 1

• reflect over y then translate down 6 left 1

• translate right 6 down 1, then reflect over x

• rotate 90 clockwise then reflect over y

Which rule would result in a translation of 2 units left and 3 units up?

• (x, y) → (2x, 3y)

• (x, y) → (x - 2, y + 3)

• (x, y) → (-x, -y)

• (x, y) → (x + 2, y - 3)