The graph of a function

Summary

• Given: a real-valued function of a real variable, $f: A→B$ where $A⊆R$ , $B⊆R$
• An ordered pair of two real numbers, denoted by $\left( a,b \right)$ , can be represented by a point in a Cartesian coordinate system.
• The graph of the $f$ is the collection of all ordered pairs $\left( x,f\left( x \right) \right)$ where $x$ is in the domain of $f$ .