Again im not the best at geometry what is the equation for the line of reflection that maps the trapezoid onto itself? a. x = 0 b. x = 3 c. y = 3 d. y = 0 pic of graph

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

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) .