Graphs

In calculus we consider real functions, and it is helpful to drawn graphs. The domain is drawn horizontally and the codomain is drawn vertically on the usual $(x,y)$ Cartesian axes.

The graph consists of the points $(x,y)$ such that $y=f(x),$ which gives a special type of curve.

Traditionally $x$ is called the independent variable and $y$ the dependent variable.

In Lab100, the software $R$ will be used to sketch graphs; meanwhile we look at some basic examples to illustrate the terminology.