Suppose $f : \mathbf { R } \rightarrow \mathbf { R }$

Short Answer

Suppose $f : \mathbf { R } \rightarrow \mathbf { R }$ where $f ( x ) = \lfloor x / 2 \rfloor$
(a) Draw the graph of $f$ .
(b) Is $f$ 1-1 ?
(c) Is $f$ onto $\text { R }$ ?