The function f(x) varies inversely with x and f(x) = -15 when x = 30

what is the inverse variation equation

Evaluate the following expression 1/3^2

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) .

The measure of an angle is 117°. what is the measure of a supplementary angle?