Basic purpose of this article is to Define and Discuss on Linear Equations. Here explain Linear Equations in mathematical point of view. A linear equation is any equation that could be expressed in the style ax + by = c, where a and b usually are not both zero. Although a linear equation may not be expressed in this style initially, it can be manipulated algebraically for this form. The slope of your line indicates whether your line slants up or as a result of the right or is usually horizontal or vertical.