Unit 5 Quiz #1 Review

Unit 5 Quiz # 1 Review

Reviewing Transformationgs

Translations:

Remember: (x, y)
x -> + right, - left
y - + up, - down

​Example: (x, y) -> (x - 5, y + 3)

Multiple Choice

How is the pre-image (red) translating to the image (blue)?

• (x - 2, y + 3)

• (x + 2, y - 3)

• (x + 3, y - 2)

• (x - 3, y + 2)

Multiple Choice

What are the new coordinates for A' if this triangle is translated (x - 2, y)

• (1, -1)

• (3, -1)

• (-1, -1)

• (1, -3)

Graphing

Translate each point (x + 3, y - 4)

A is (-4, 6)

B is (0, 0)

Reflections:

When reflecting over an axis, follow these rules:

Reflect over x-axis -> (x, -y)
Reflect over y-axis -> (-x, y)

​Example: Reflect over y-axis.

Graphing

Reflect these points over the x-axis:

A (1, -2)

B (3, -4)

C (5, -6)

Graphing

Reflect this triangle over the y-axis.

Here's the points of the pre-image to help:

A(2, 3)

B(3, 1)

C(1, 2)

Rotations:

Rotations (Continued)

​Example: Rotate 180 degrees

Multiple Choice

How did the pre-image (orange) transform into the image (green)?

• Rotated 90 degrees clockwise

• Rotated 180 degrees

• Rotated 90 degrees counterclockwise

• Rotated 270 clockwise

Multiple Choice

How is the pre-image (orange) rotated into the image (green)?

• 90 degrees clockwise

• 180 degrees

• 90 degrees counterclockwise

• Reflected over the x-axis

Multiple Choice

How did the pre-image (blue) transform into the image (green)?

• Reflected over the origin

• Translated left by 2 and down 4

• Rotated 180 degrees

• Dilated by 2

Multiple Choice

What 2 transformations is moving A to B?

• Translation then rotation

• Rotation then translation

• Reflection then rotation

• Reflection then translation