I need help with these two questions

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

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) .

Write an equation for the function that includes the points (1,4/5) and (2,2/3)