Identify a horizontal or vertical stretch or compression of the 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) .

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41