Here f(0) = 10, f(1) = 11, f(2) = 12, ..., f(10) = 20, etc., and f(–1) = 9, f(–2) = 8, ..., f(–10) = 0 and so on.

Therefore, shape of the graph of the given function assumes the form as shown.

Remark:

The function f defined by f(x) = mx + c, x 4 \in $ R, is called linear function, where m and c are constants. Above function is an example of a linear function.