One to one
Passes vertical line test
Passes horizontal line test
Function
One to many
Fails vertical line test
Passes horizontal line test
Relation
Many to one
Passes vertical line test
Fails horizontal line test
Function
Many to many
Fails vertical line test
Fails horizontal line test
Relation
Function
Passes the vertical line test
[x,y]
including those numbers
(x,y)
not including those numbers
2^x
Exponential
1/x
Hyperbola
x^2
Quadratic
Parabola
x^3
Cubic
√x
Half of a side parablola
x^4
Parabola with a flat bottom
3√x
Side cubic
(x-h)^2+(y+k)^2=r^2
Circle
√(r² - x²)
Semi circle