8-2 Reflections

What is a reflection?

• When you turn an object around a point.
• When you slide an object form one place to another.
• When you flip or mirror an object across a line.
• When you resize an object.

Identify the transformation from ABC to A'B'C'.

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

Which answer shows a reflection across the y-axis?

• a

• b

• c

• d

Find K' if the figure is reflected across the x-axis

• (4, 1))
• (-1, -4)
• (1, -4)
• (1, 4)

Reflect Point C over the y-axis:

• (-3, 2)
• (3,2)
• (-2,3)
• (3,0)

What is the rule for the following reflection? 

• Reflection across       y = 3
• Reflection across        x = −3
• Reflection across            x = 3
• Reflection across          y = −3

Which pair have a line of reflection of x = -2?

• A & B

• B & C

• G & H

• E & F

The original figure prior to a transformation.

• Pre-image
• Image

The result of a transformation.

• Pre-image
• Image

Reflect the point (2, -4) over the y-axis.

• (-4, 2)
• (-2, 4)
• (-2, -4)
• (2, 4)