Students will learn the distinction between continuous and discrete functions. Students should also learn how to graph discrete functions, given the definition of a function and its domain. For example, if \(f(x) = 2x\) and the domain of \(f\) is \(\{-1, 0, 1, 2\},\) then \(f\) is a discrete function. For a lesson, watch this and this, in whatever order you please.