Linear
straight line through (0,0)
Quadratic
a u shape touching the x axis
absolute Value
V shape
Square root
Starts from (0,0) makes a turning signal shape
Cubic
goes from top to bottom with alternating box in the middle
cube root
follows the x axis switches at 0,0
Exponential
starts on negative x-axis then goes up
constant
straight line along the x-axis