| Term | Meaning | Example |
|---|---|---|
| Variable | A letter representing an unknown number | x, y, n, a |
| Coefficient | The number in front of a variable | In 5x, the coefficient is 5 |
| Term | A single number, variable, or both multiplied | 3x², −7, 2xy |
| Expression | Terms combined with + or − (no equals sign) | 3x + 5, x² − 2x + 1 |
| Equation | Two expressions connected with = sign | 3x + 5 = 20 |
| Formula | An equation showing how things relate | A = πr² (area formula) |
| Identity | True for ALL values (uses ≡ symbol) | 2(x + 3) ≡ 2x + 6 |
This key facts covers Key Vocabulary within Algebraic Notation for GCSE Mathematics. Revise Algebraic Notation in Algebra for GCSE Mathematics with 13 exam-style questions and 4 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 2 of 7 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Algebraic Notation
In the expression 7x, what is the coefficient?
Explain the difference between an equation and an identity. Give one example of each.
Quick recall flashcards
Variable
A letter representing an unknown value
Term
A single part of an expression: 3x is one term