Reflections on a Graph

What are the coordinates of M', the image of M(2,4), after a counterclockwise rotation of 90º about the origin and then reflected over the line y = x?

• (-2, 4)

• (2, -4)

• (-4, 2)

• (-4, -2)

Which graph is not a reflection?

• d

• c

• b

• a

True or False: When a point is reflected across a line of symmetry, it is perpendicular to the pre-image.

• True

• False

True or False: Reflections preserve rigid motion.

• True

• False

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

• 90^o counterclockwise rotation

• Reflection across the x-axis

• Translation

• 90^o clockwise rotation

Describe the transformation shown in the graph.

• Reflect over x-axis

• Reflect over y-axis

• Rotate 180 degrees

• Translate 4 units right

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

Determine how to translate triangle A'B'C' to triangle ABC.

• (x+2, y-5)

• (x+2, y-9)

• (x-2, y-9)

A flip is also called a ___________.

• Translation

• Reflection

• Rotation

• Transformation