The image of the points and the transformation is attached
What is reflection
Reflection refers to a transformation in which a figure is flipped over a line.
This line (y = x) is called the line of reflection, and the resulting figure is the mirror image of the original across that line.
The rotation was in counterclockwise direction about the origin
complete question
graph AB with endpoints A(4, 5) and B (1, 9) and its image after the composition Reflection: in the line y = x Rotation: 90° about the origin