Reflections

What is the rule for a reflection over the y-axis?

• (x,y)→(-x,y)

• (x,y)→(x,-y)

• (x,y)→(-x,-y)

• (x,y)→(y,x)

What is the rule for a reflection over the x-axis?

• (x,y)→(-x,y)

• (x,y)→(x,-y)

• (x,y)→(-x,-y)

• (x,y)→(y,x)

Flipping a figure is a ...

• Rotation

• Reflection

• Dilation

• Translation

Look at the graph. Which shape is the pre-image?

• triangle GIH

• triangle G'I'H'

Look at the graph. Choose the correct statement.

• Δ CDE and Δ C'D'E' are similar

• Δ CDE and Δ C'D'E' are congruent

• Δ CDE and Δ C'D'E' are not related

What would be the coordinates of point K if it was reflected over the x-axis?

• (-5, -2)

• (-5, 2)

• (5, -2)

What is the name of coordinate (0, 0)?

• Ordered Pair

• Start place

• Origin

• X-axis

State the line of reflection.

• Reflection across y-axis
• Reflection across x-axis
• Reflection across x = 1
• Reflection across y = 1

Is the picture being reflected in the y-axis or x-axis?

• y-axis
• x-axis

What is the Algebraic Notation for this Reflection?

• (x, y) → (y, x)
• (x, y) → (-x, y)
• (x, y) → (-y, -x)
• (x, y) → (x, -y)