In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation or an algebraic expression. In simple words, a variable is a quantity that can be changed and is not fixed. …

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. …

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....

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.

What are terms, variables, coefficients and constants in algebra, variable expressions, Grade 6 algebra with video lessons, examples and step-by-step solutions.

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 …

Nov 15, 2024 · Understanding variables and unknowns is essential for solving algebra problems. Variables are symbols that represent numbers, and unknowns are the specific values we need to find …

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 …

Jan 9, 2024 · A variable in math is a symbol or letter, such as x, y, or z, that represents an unknown number. Variables are crucial components of algebraic expressions and equations, allowing …

Jan 2, 2021 · Learn what a variable is in math, how it works in equations, and when students start using variables in school.