Common Functions Reference

Here are some of the most commonly-used functions, and their graphs:

Linear Function:

y=mx+b graph

f(x) = mx + b

Square Function:

Square function

f(x) = x2

Cube Function:

Cube function

f(x) = x3

Square Root Function:

Square root function

f(x) = √x

Reciprocal Function

Reciprocal function

f(x) = 1/x

Logarithmic Function:

natural logarithm function
f(x) = ln(x)

Floor and Ceiling Function:

Floor function

The Floor Function

Dance Moves

You can remember them by dancing (author unknown):