In mathematics, the '''graph''' of a [[function (mathematics)|function]] ''f''(''x''<sub>1</sub>, ''x''<sub>2</sub>, ..., ''x''<sub>''n''</sub>) is the collection of all [[tupleordered pair]]s (''x''<sub>1</sub>, ''x''<sub>2</sub>, ..., ''x''<sub>''n''</sub>, ''f''(''x''<sub>1</sub>, ..., ''x''<sub>''n''</sub>)). In particular, ''graph'' means the graphical representation of this collection, in the form of a [[curve]] or [[surface]], together with axes, etc. Graphing on a [[Cartesian coordinate system|Cartesian plane]] is sometimes referred to as '''curve sketching'''.
