Pls help Asap
1. Y=X+4
2. Y=3X
3. Y=X+1

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) .

Pls never taught i’m really confused and i rlly need

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?