TEST: Unit 1 Transformations

What is the angle of rotation?

• Clockwise 90°

• 180°

• Counter clockwise 270°

• Counterclockwise 90°

• Clockwise 270°

Select BOTH statements that could describe the transformation

• Reflection across the x-axis & y-axis

• Rotation 180 degrees

• Translation down 8

• Reflection across y=x

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

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

Which answer shows a reflection across y-axis?

• d

• c

• b

• a

Rotate the point (-1,-5) around the origin 180 degrees. State the image of the point.

• (-5,-1)

• (-1, 5)

• (1,-5)

• (1, 5)

The image of the point (2, -7) reflected over the what line would be (7, -2).

• x - axis

• y - axis

• y = x

• y = -x

The coordinates of triangle JRB are ,J(1, -2) , R(-3, 6) and B(4, 5) . What are the coordinates of the vertices of its image after the

transformation T_{(2, -1)} then R_y-axis ?

• (3, 1), (-1, -7), (6, -6)

• (3, -3), (-1, 5), (6, 4)

• (1, -3), (5, 5), (-2, 4)

• (-1, -2), (3, 6), (-4, 5)

Which would be the correct notation for the composition of transformations from blue to red to green?

• R_{x axis} then R_{y axis}

• (-9, -3)

• (9, 3)

• (3, -9)

• (-9, 3)

Write a rule describing the transformation.

• reflection across the y-axis

• reflection across the x-axis

• rotation 180 degrees about the origin

• translation: 4 units right and 3 units down