Question

The above graph is of

• A. Relation but not a function
• B. Function but not a relation
• C. Both Relation and a function
• D. Neither relation nor function

Answer 1

The correct option is C Both Relation and a function

Using Vertical line test


We can see that the vertical line cuts the graph at one point therefore the vertical line test is passed.

$\therefore$ for one value of $x$ there is only one value of $y$ everytime.

Hence the given graph is a relation as well a function.