You can use any of the english alphabets such as a, b, c, x,y, p, q in lower or upper case to represent a.

Variable in math definition. Defining your variables, and deciding how you will manipulate and measure them, is an important part of experimental design. A variable is a symbol used to represent a number in an expression or an equation. For example, x + 8 = 16;

In mathematics, a variable is a symbol used to represent an arbitrary element that can change or that may take on different values. In x + 2 = 6, x is the variable. Letters are used to represent these changing, unknown quantities.

A symbol that has a fixed numerical value is called a constant. A variable is a quantity that can change with the context of a particular mathematical problem or with the context of an experiment. In algebra, a variable is usually a letter or other symbol that stands for a number or quantity that may vary.

Variables may also refer to a letter,. “x” here acts as a variable. In simpler terms, a variable stands as a symbol for an unknown number whose value is not given.

View our lesson on writing algebraic expressions. In the case of x + 2 = 6 we can. An entity with no fixed value is called a variable.

These are important things to keep in mind when using variables in math: Here are a few examples of variables: A symbol for a value we don't know yet.