Rotations in the Coordinate Plane

Question 1

After Hillary realized her clock was running 30 minutes fast, she used a knob on the clock to turn the minute hand back 30 minutes. Which describes the rotation of the minute hand?

Revolt · Accepted Answer

counterclockwise rotation

Question 2

What is the coordinate for the image of point H(2, –6) under a 90° clockwise rotation about the origin?

Revolt · Accepted Answer

H’(–6, –2)

Question 3

Rectangle PQRS is rotated 90° clockwise about the origin. What are the coordinates of R’?

Revolt · Accepted Answer

R’(–4,1)

Question 4

Triangle XYZ is rotated 90° counterclockwise about the origin.What are the coordinates of point Y’?

Revolt · Accepted Answer

(1, 4)

Question 5

Andrew’s rotation maps point M(9, –1) to M’(–9, 1). Which describes the rotation?

Revolt · Accepted Answer

rotation

Question 6

Tomaz realized that the tip of a second hand on a clock rotates about the center of the clock. He watched the second hand rotate around the center of the clock for 15 seconds. Which describes the rotation he observed?

Revolt · Accepted Answer

clockwise rotation

Question 7

Iliana rotated trapezoid WXYZ 180° about the origin. What is the correct set of image points for trapezoid W’X’Y’Z’?

Revolt · Accepted Answer

W’(4, –2), X’(3, –4), Y’(1, –4), Z’(0, –2)

Question 8

Triangle XYZ is rotated 90° clockwise about the origin.What are the coordinates of point X’?

Revolt · Accepted Answer

(1, 3)

Question 9

What is the mapping rule for a 180 degree rotation about the origin?

Revolt · Accepted Answer

(x, y)g(–x, –y)

Question 10

Triangle XYZ has vertices X(1, –1), Y(3, 4), and Z(5, –1). Nikko rotated the triangle 90° counterclockwise about the origin. What is the correct set of image points for triangle X’Y’Z’?

Revolt · Accepted Answer

X’(1, 1), Y’(-4, 3), Z’(1, 5)

Rotations in the Coordinate Plane Answers

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