Quadratics Definitions

By Aoife K.


A symmetrical open plane curve formed by the intersection of a cone with a plane parallel to its side. The path of a projectile under the influence of gravity ideally follows a curve of this shape.


Involving the second and no higher power of an unknown quantity or variable.


The highest point; the top or apex.

each angular point of a polygon, polyhedron, or other figure.

  • a meeting point of two lines that form an angle.

  • the point at which an axis meets a curve or surface.

Axis of Symmetry

A line through a shape so that each side is a mirror image. If the shape were to be folded in half along the axis of symmetry, then the two halves would be the same, they would match up.

Maximum Value

The maximum value of a quadratic function.

Minimum Value

The minimum value of a quadratic function.


Each of the quantities in a ratio, series, or mathematical expression.

First Differences

Example/Definition (below): the difference in y-values for consecutive x-values in a table

Big image

Second Differences

Example/Definition: the difference between the the first differences for example 10-6 above is 4 and so on.

Zeros (roots)

It is a solution to the polynomial equation, P(x) = 0.
It is that value of x that makes the polynomial equal to 0.