I NEED HELP ASAP!!! i turn this in tomorrow and i have no idea what to do

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) .

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

If the discriminant if a quadratic equation is 4 which statement describes the roots?