Transformations Corrections

1. Triangle PQR has the following coordinates:

P(-9, -12) Q(-6, -13) R(-7, -4)

Where is Q’ after a translation 9 units right and 11 units up?

• Q’ (3,-2)

• Q’ (-3,2)

• Q’ (-2,3)

• Q’ (2,-3)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

2. Which algebraic representation shows the effect that a reflection over the x-axis will have on the coordinates of a figure?

• (x, -y)

• (-x, y)

• (-x, -y)

• (-y, x)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

These coordinates represent a triangle that was dilated. What was the scale factor that was used ?

• -9

• 2/3

• 4

Tags

CCSS.8.G.A.3

When a figure is reflected over the y-axis, what happens to the y-coordinates?

• the y-coordinates flip their signs

• the y-coordinates stay the same

• the y-coordinates become the new x-coordinates

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which is a not a true statement about the figures shown ?

• Triangle GHI is similar to Triangle G’H’I’.

• The image is smaller than the pre-image.

• The transformation shown is a dilation.

Tags

CCSS.8.G.A.4

CCSS.HSG.SRT.A.2

Which transformation was used to create this image ?

• translation left and up

• rotation 180 degrees clockwise

• reflection over the x-axis

• translation right and down

Tags

CCSS.HSG.CO.A.2

What is the scale factor?

• 2/3

• 3/2

• 4/5

• 5/4

Tags

CCSS.7.G.A.1

Describe what should happen in a dilation when the scale factor is greater than 1

• the image will be larger than the pre-image

• the image will be congruent to the pre-image

• the image will be smaller than the pre-image

Tags

CCSS.8.G.A.3

Point R is located at (8,13). Where is R' after a translation 8 units left and 7 units down?

• (0,6)

• (1,5)

• (16,20)

• (15,6)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Describe the transformation

• rotation 90 degrees clockwise

• rotation 90 degrees counterclockwise

• reflection over x-axis

• translation 1 unit right and 4 units up

Tags

CCSS.8.G.A.3