This document discusses different types of functions including linear, quadratic, cubic, and reciprocal functions. It also mentions inverse functions where f-1(x) = x and discusses approaches to prove that a function is one-to-one including showing that f(x1) = f(x2) or using the horizontal line test.

1. Basic Graph
Linear
Quadratic
Cubic
Reciprocal
Function
Inverse
ff-1(x) = x
Df = Rf
-1
Rf = Df
-1
To prove One to
One function
Algrebraic
approach
f(x1) = f(x2)
Horizontal
Line Test