Constant Definition

In Mathematics, Constant has different meanings as per the context in which it is being used. The simplest definition of the Constant is a number that has a fixed value. It means the number that doesn’t change with variation in the Variable of an Expression.

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Read about Variables and Expression in detail.

For Example:

In the following equation,

4x + 6 = 79

The terms "6" and "79" are called constant because these numbers don’t depend on the variable "x". So, you can say that a number with which no variable is multiplied is called a “Constant” in Mathematics.


Are constant and coefficient same?

No, Constant and Coefficient both belong to two different terminologies in Mathematics. A constant is one to which no variable is attached. On the other hand, the coefficient is the number that is multiplied by a variable.

What is the difference between constant and variable?

A constant doesn’t change in any condition while a variable depends on constants and can change its value according to expression. These are also called opposite to each other in this dimension.

Is constant a term in an expression?

Yes, the constant is a single term that takes part in creating an expression in Mathematics.


Read about Terms in Mathematics here.

How can we simplify an equation having multiple constants?

If you have multiple constants in an equation, you can solve them using the operators used in the equation or expression. Simply, you have to solve the equation using those specific operators.

Is it possible to have an alphabet as a constant?

Yes, it is possible to have an alphabet as a constant. In many general forms of equations, you must have seen alphabets like "a", "b", and “c” written just beside the variables.

Is a number always considered a constant in Mathematics?

No, if a number is multiplied by a variable, it will be a coefficient not a constant. But if a number is written separately in an equation or expression, it will be called a constant.