Geo CLass Translation and Reflections Test 12-15

Identify the transformation.

• Reflection across y-axis
• 90 Rotation counter clockwise
• Translation 5 units left, 1 unit up.
• Translation 5 units right, 1 unit down

• J'(0,-2) K'(2,-2) L'(2,0)

• J'(1,0) K'(1,1) L'(1,-1)

• J'(0,-1) K'(1,-1) L'(1,1)

Reflect the quadrilateral TUVW over the y-axis. What are the coordinates of T' and V'?

• T'(2,4) V'(-2,1)

• T'(4,2) V'(1,-2)

• T'(4,-2) V'(1,2)

• T'(-4,-2) V'(-1,-2)

A translation is another word for a...

• Flip
• Slide
• Turn
• Reflection

Identify the transformation from ABCD to A'B'C'D'.

• Translation
• Reflection across the x-axis
• Reflection across the y-axis
• 90^o counter clockwise rotation

Plot the point (4, 2). Reflect it in the x-axis.

A triangle with points A (3, 4) B (7, 4) and C (0, 10) is translated 4 units left and 2 units down. What are the coordinates for the image?

• A (7, 2) B (11, 2) and C (4, 8)

• A (-1, 2) B (3, 2) and C (-4, 8)

• A (3, 4) B (7, 4) and C (0, 10)

• A (-1, 6) B (3, 6) and C (-4, 12)

When reflecting over the y-axis, the ​ (a)   stays the same and the ​ (b)   becomes opposite.

• y
• x

What is the rule for reflecting over the y-axis?

What is the rule for reflecting over the x-axis?