The graph shows the cost (y) to mail a package of any weight (x). which equation could be used to calculate the cost to mail a package of any weight? a) y = 3 2 x b) y = 2 3 x c) y = 4 5 x d) y = - 3 2 x

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) .