## Variable Definition

`A letter/symbol representing`

an unknown value

## Examples of a Variable:

Use letters such as x, y, z for variables

## Variable Tips for a known type:

For objets like apples or cars...

Always use the

*first letter* of the object

For apples, use the variable

*a*For cars, use the variable

*c*## When to use arbitrary variables:

Arbitrary variable phrases:

*a number*,

*an unknown number*then you must pick a variable.

Use

*x* as an arbitrary variable

## Variable Examples:

Example | Variable |
---|

John's age | **a** |

Mary's height | **h** |

## Let statement:

The let statement is a short phrase

It restates what you are solving for.

Let a be John's age

##### How does the What is a Variable Calculator work?

Free What is a Variable Calculator - This lesson walks you through what a variable is and how to use it.
Also demonstrates the let statement.

### What 1 formula is used for the What is a Variable Calculator?

Can use any letter for a variable except e and i since those are designated special numbers in math.

For more math formulas, check out our

Formula Dossier
### What 2 concepts are covered in the What is a Variable Calculator?

- arbitrary
- A number which could be any number it is defined to be but for which no specific value is chosen.
- variable
- Alphabetic character representing a number

## What is a Variable Calculator Video

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