Question

Graph of dependent variable $y$ versus independent variable $x$ as shown below. Choose the correct statement

• A. Graph is symmetrical about $y-$ axis.
• B. For single value of $y$ we get two values of $x$. So it is a graph of a function.
• C. For single value of $x$ we may get two values of $y$. So it is not a graph of a function.
• D. None of the above

Answer 1

The correct option is C For single value of $x$ we may get two values of $y$. So it is not a graph of a function.

Graph represents function only If one input ($x$) gives exactly one output ($y$).