I'm doing integers one step equations what is x+9=12

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) .

Find the y-intercept and x-intercept for the equation 5x-3y=60 what is the y-intercept

Find the maximum value of p= 4x + 5y subject to the following constraints :