# The Standard Line

- Author:
- Allen Olson

Linear functions are probably the most familiar functions. They are just straight lines. The standard mantra in American education is to express the formula for a line as

*y*=*mx*+*b*. You may know this formula, but do you know what it means? Going one step further, you probably recall that*m*represents the "slope" of the line and*b*is called the "y-intercept." When you move from the abstraction of a generalized line with some "slope" and "y-intercept" to the applications of a particular formula, the connection sometimes gets lost. And sometimes even the simple idea of a "linear function" becomes more complex.