Please help! I am so desperate for this answer, pls help! Im giving 40 points for this question!

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) .

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.