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.

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.

Variables in math are symbols, often letters, that represent different values in various situations. They help us understand and solve problems with changing values.

Jul 23, 2025 · A variable is like a placeholder or a box that can hold different values. In math, it's often represented by a letter, like x or y. The value of a variable can change depending on the situation. …

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 independent if you get to pick its value; it's dependent if all you can do is solve for its one fixed value. In other words, a "dependent" variable is one whose value has already been determined …

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

Variables in mathematics are symbols representing unknown numerical values in equations, including dependent and independent types. Explore their definition, classification, and practical applications …