Equations and Graphs of Linear Relations Summary


Using equations to represent linear relations has many advantages. Equations are concise, can represent an unlimited domain and range, and can be manipulated algebraically. With some linear equation forms, characteristics about the corresponding relation can be determined directly from the equation itself, and a graph can be quickly sketched or visualized. Lines that are parallel or perpendicular have related slopes, which can be used to solve problems involving these types of lines.