Can someone please help me with this question?

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

Ined this is due tomorrow and i dont know the answer can you find all the exponents