This math topic focuses on calculating the run of a line from given coordinates, specifically the change in the x-values (Δx) between two points on a line. These problems help in understanding and applying the concept of run in the context of linear equations and graphing. Participants are asked to find the run using the y-values provided by a function output for different x-values, enhancing their skills in interpreting and manipulating linear relationships between variables. Each question involves practical application by determining the horizontal change (run) over specified intervals.