# Math Vocab

## Parabola

A parabola is a special curve on a graph that is shaped like an arch. Any point on a parabola is at an equal distance from a fixed point (the focus), and a fixed straight line (the directrix).

An equation where the highest exponent of the variable (usually "x") is a square (2). It is usually written ax^2+bx+c = 0

Example: 2x^2+5x-3 = 0

## Vertex

The vertex of a parabola is the point where the parabola crosses its axis of symmetry.

## Axis of Symmetry

A line through a shape so that each side is a mirror image.

## Maximum Value

Maximum Value is the greatest point on a parabola.

## Minimum Value

Minimum Value is the least greatest point on a parabola.

## Term

In Algebra a term is either:
• a single number
• a variable
• numbers and variables multiplied together.

## First Differences

The differences between the y numbers.

## Second Differences

The differences between the first differences.

## Zeros (root)

Where a function equals the value zero (0).
Example: -2 and 2 are the zeros of the function x^2 - 4