Rotations

Triangle A is rotated 90° clockwise with the origin as the center of rotation to create a new figure. Which rule describes rotating 90° clockwise?

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

Triangle A is rotated 270° counterclockwise with the origin as the center of rotation to create a new figure. Which rule describes rotating 270° counterclockwise?

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

What is the algebraic expression for the transformation shown?

270 degrees counter clockwise

• (y, -x)

• (-x, -y)

• (x, -y)

• (-y, x)

If you were to rotate ABCD 90° counterclockwise about the origin, what would the algebraic rule be?

• (-x, y)

• (-x, -y)

• (y, -x)

• (-y, x)

What is the algebraic expression of rotation for this shape that rotated 270⁰ counterclockwise about the origin?

• (x, y) -- (-y, x)

• (x,y) -- (-x, y)

• (x,y) --- (y, -x)

• (x, y )--- (-x, -y)

What is the algebraic expression for the transformation?

180 degrees

• (y, -x)

• (-y, x)

• (-x, -y)

• (-x, y)

What is the algebraic expression for the transformation?

180 degrees

• (y, -x)

• (-x, -y)

• (x, -y)

• (-y, x)

What is the algebraic expression for the transformation?

270 clockwise

• (y, -x)

• (-x, -y)

• (x, -y)

• (-y, x)

What type of transformation?

• (y, -x)

• (-x, -y)

• (x, -y)

• (-y, x)