90 POINTS PLS HELP Write functions for each of the following transformations using function notation. Choose a different letter to represent each function. For example, you can use R to represent rotations. Assume that a positive rotation occurs in the counterclockwise direction.

-translation of a units to the right and b units up

-reflection across the y-axis

-reflection across the x-axis

-rotation of 90 degrees counterclockwise about the origin, point O

-rotation of 180 degrees counterclockwise about the origin, point O

-rotation of 270 degrees counterclockwise about the origin, point O

In the same way that other functions can be combined, a series of transformations can be combined into a single function. For example, this statement for the function S shows one way to represent the rotation of a point 270° counterclockwise about the origin followed by a translation 3 units to the left and 1 unit up: S(270, O)/<-3,1>(x, y) = (y – 3, -x + 1).

Write a function to represent each series of transformations:

-rotation of 90 degrees counterclockwise about the origin, point O, then a reflection across the x-axis

-reflection across the y-axis, then a translation a units to the right and b units up

-translation a units to the right and b units up, then a rotation of 180 degrees counterclockwise about the origin, then a reflection across the y-axis