## Linear Function Behavior (LFB)

Lines through the origin are peculiar in that they have an
expression of the form , where is a constant (the
*slope*). This formula makes possible the following
``additive" property:

For the particular choices of and , we would have

Despite students' tendancies to treat every function as
additive, **other functions just do not have this property**.
Typical mistakes made include:

Top Algebra Errors Made by Calculus Students
(full document)

Full List of Grading Codes

Thomas L. Scofield
2003-09-04