A variable is a symbol used to represent an unknown or arbitrary number in mathematical expressions and equations. It allows for generalization and manipulation of algebraic formulas.
5 Must Know Facts For Your Next Test
Variables are often denoted by letters such as $x$, $y$, or $z$.
In an equation, variables can represent any value that satisfies the equation.
Variables can be dependent or independent; independent variables are inputs, while dependent variables are outputs.
Substituting different values for a variable can help solve algebraic expressions and equations.
Understanding the role of variables is crucial for solving linear equations, inequalities, and functions.