A linear equation is an equation that may be put in the form of

where are the variables (or unknowns) and are the coefficients. The coefficients may be considered as parameters of the equation, and may be arbitrary expressions, provided they do not contain any of the variables.

Linear equations can be in:

Standard Form

The Standard Form for a linear equation in two variables, and , is usually given as

You can't use 'macro parameter character #' in math modeAx + By = C$$ where, if at all possible, - $A$, B, and $C$ are integers, - and $A$ is non-negative, - and, $A$, $B$, and $C$ have no common factors other than 1. If we have a linear equation in *slope-intercept form*, we can change that equation into **Standard Form**. ### Slope-intercept Form The slope intercept form $$y = mx + b$$is used when you know the slope of the line to be examined and the point given is also the $y$ intercept $(0, b)$. In this form, $b$ represents the $y$ value of the $y$ intercept point.