Transformations

What type of transformation is this?

• Translation

• Rotation

• Reflection

If the triangle is reflected across the line y = 3, what is the resulting image?

• Triangle A

• Triangle B

• Triangle C

Answer explanation

This image will be reflected over the line y=3 (not the x-axis or y-axis).

Look at the original image. How far away is it from the line of reflection? It will be the SAME distance from the line when it is reflected across.

Answer explanation

Subtract 4 from the x value and add 3 to the y value.

Trapezoid DEFG will be reflected over the x-axis. What will be the coordinates of the NEW point E'?

Answer explanation

Point E is at positive 4 on the y-axis, so E' (E prime) will be at -4. The x value stays the same.

Which image shows a rotation?

• Image A

• Image B

• Image C

How would the translation  $T\left(x+7\right)$ change an image on the coordinate plane? 

• It would move the image 7 places up.

• It would move the image 7 places down. 

• It would move the image 7 places to the left. 

• It would move the image 7 places to the right. 

What type of transformation is this?

• A rotation

• A translation

• A reflection

What type of transformation is this?

• A rotation

• A reflection

• A translation

How would the translation  $T\left(y-2\right)$  change an image on the coordnate plane?

• It would move the image 2 places up.

• It would move the image 2 places down. 

• It would move the image 2 places to the left.

• It would move the image 2 places to the right. 

Which image shows a rotation?

• Image A

• Image B

• Image C