Q. The graph of an identity function on $R$ is
Relations and Functions
Solution:
Let $R$ be the set of real numbers. Define the real valued function $f: R \rightarrow R$ by $y=f(x)=x$ for each $x \in R$. Such a function is called the identity function. Here, the domain and range of $f$ are $R$. The graph is a straight line as shown in figure given below. It passes through the origin.
