The function find_collinear finds the set of collinear points. Input: An RDD (which is the output of the get_cartesian() function. Output: An RDD containing the list of collinear points formatted according to the format_result function. Approach:1. Find the slope of the line between all pairs of points A (Ax, Ay) and B (Bx, By) 2. For each (A, B), find all points C ((C1x, C1y), (C2x, C2y),... Cnx, Cny)) where slope of (A, B) 3. Return (A, B, Ck) where Ck- all points of C which satisty the condition 1 slope of (A, Ci). The assert statement unit tests for this function will help you with this.