Basic objective of this article is to Discuss on Equations of Lines. Here explain Equations of Lines in Geometric and mathematical point of view. Here explain Equations of Lines with examples and figure. Equations involving a couple of variables can be graphed on any x− y work well plane. In general, the next principles are true: If the point lies on the graph associated with an equation, then its coordinates make the equation an accurate statement. And If the coordinates of any point make an equation an accurate statement, then the point lies for the graph of the formula and equation.