Area model to represent the expression for 22 x 20

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 area of an equilateral triangle with a side of 6 inches

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?