matrices

• reflection in the line y=x

  
• reflection in the x axis (y=0)

  
• reflection in the y axis (x=0)

  
• stretch with scale factor k parallel to x axis

  
• stretch with scale factor k parallel to y axis

  
• enlargement with scale factor k with origin as centre

  
• 180 rotation about the origin

  
• 90 rotation (clockwise) about the origin

  
• 270 rotation (clockwise) about the origin