8 terms

# Math Unit Two

Variable, constant, algebraic expression, evaluate, equation, solution, inverse operations, expression.
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Constant
A quantity that does not change.
Algebraic Expression
Something that contains one or more variables and may contain operation symbols.
Evaluate
To ________ an algebraic expression, substitute a number for the variable and then find the value.
Inverse Operations
Operations that undo each other. Addition and subtraction are ______ ________. If an equation contains addition, solve it by subtracting from both sides to "undo" the addition.
Equation
An _______ is a mathematical statement that two expressions are equal. You can think of a correct equation as a balanced scale.
Variable
A letter or symbol that represents a quantity that can change.
Solution
Equations may contain variables. If a value for a variable makes an equation true, that value is a ______ of the equation.
Expression
An equation can be solved, but an __________ can only be simplified.