Illustrated definition of Variable: A symbol for a value we don't know yet. It is usually a letter like x or y. Example: in x + 2 = 6, x is the variable....

If an algebraic equation has two variables, x, and y, and each value of x is related to any other value of y, then x is an independent variable, and y is a dependent variable.

One of the variables, N, the number of particles, is a positive integer (and therefore a discrete variable), while the other three, P, V and T, for pressure, volume and temperature, are continuous variables.

Jul 23, 2025 · Variables can be classified into different types based on their characteristics including independent variables, dependent variables, discrete variables and continuous variables each …

Learn what a variable is in math with simple explanations. Understand its definition, types, and the difference between dependent & independent variables.

Jan 2, 2021 · A variable is a symbol, usually a letter, that stands for a number we don’t know yet. It can change depending on the problem, which is why it’s called a variable.

In mathematics, a variable is a symbol, usually a letter (like x or y), that represents an unknown or changeable quantity. Unlike constants, which have fixed values, variables can take on different …

Variable, In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation. Commonly used variables include x and y (real-number unknowns), z (complex-number …

A variable is a quantity that may change within the context of a mathematical problem or experiment.

May 28, 2025 · The variable is an indispensable concept in mathematics and its applications. Its ability to represent changing quantities or unknowns allows for the formulation and solution of a vast range …