Chapter 5 Algebra
* Algebraic expressions can be used to describe situations and solve real-world problems.
Number pattern - An ordered list of numbers that usually follows a rule. Ex: 1, 3, 5, 7 is a pattern whose rule is to "add 2 to a term to get the next term".
Term * A number, variable, number or quotient in an algebraic expression. Ex: x, 1, 3x, 2 are terms of the expression: x + 1 + 3x + 2.
* One number in a sequence or number pattern.
Variable - A symbol, usually a letter, used to represent a number in an expression or an equation. In the expression, m + 11, m is the variable.
Numerical expression - An expression that only contains numbers and symbols.
Evaluate - To find the value of.
Algebraic expression - An expression that contains at least one variable. Ex: 2x, 3 - x, 5 + x are algebraic expressions in terms of x.
Simplify - To find an equivalent expression that is simpler than the original.
Like terms - In the expression a + 2a + 2, the like terms are a and 2a.
Inequality - A mathematical statement that two expressions are not the same or equal.
Equation - A mathematical statement that two expressions are the same or equal.
Solve - To work out a solution; To find the value of the variable that will make an equation true.