Rotations in the coordinate plane

Front

What is the rule for rotating an image counterclockwise 90 degrees around the origin in the coordinate plane?

Back

(x, y) --> (-y, x)

Front

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

Back

H’(–6, –2)

Front

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

Back

(1, 4)

Front

What is the rule for rotating an image 90 degrees around the origin of the coordinate plane?

Back

(x, y) --> (y, -x)

Front

What is the rule for rotating a figure 180 degrees around the origin in the coordinate plane?

Back

(x, y) --> (-x, -y)

Front

What are the coordinates of point (3, 4) after a 90° clockwise rotation about the origin?

Back

(4, -3)

Front

What is the rule for rotating an image 270 degrees counterclockwise around the origin?

Back

(x, y) --> (y, -x)

Front

If point A(1, 2) is rotated 180 degrees around the origin, what are the new coordinates?

Back

A’(-1, -2)

Front

What is the effect of a 90° clockwise rotation on the coordinates of point (x, y)?

Back

(y, -x)

Front

What is the effect of a 90° counterclockwise rotation on the coordinates of point (x, y)?

Back

(-y, x)