# 2: Lines and Functions


• 2.1: Lines, slope and intercepts
In this chapter we will introduce the notion of a function. Before we give the general definition, we recall one special kind of function which is already familiar to the student. More precisely, we start by recalling functions that are given by straight lines.
• 2.2: Introduction to functions
We now formally introduce the notion of a function.
• 2.3: Exercises

This page titled 2: Lines and Functions is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Thomas Tradler and Holly Carley (New York City College of Technology at CUNY Academic Works) via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.