Line

The line equation represented by y = mx + b, is one of the most basic formulas in plotting a line. Where m represents the slope, x represents the value in horizontal coordinate and b represents the offset from y.

Suppose we have a line segment (x₁, y₁) to (x₂, y₂), the slope can be easily computed as (y₂ - y₁) / (x₂ - x₁) or to understand it better, we can read it as an increment in y for every step in x.