The rectangular coordinates of a point are given. Find polar coordinates for the point. 2) (-3, 3) The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, 0). 3) x2 + y2 - 4x = 0 The letters r and 0 represent polar coordinates. Write the equation using rectangular coordinates (x, y). 4) r = 2(sin e - cos e)