Question

Each of the four graphs below represents a function.Which function has an inverse that is also a function?

Answer 1

For the given question, we will choose the function that has an inverse that will be a function

So, the function must be a one-to-one function

We will use the horizontal line test to check if the function is a one-to-one function or not

the horizontal line will intersect with the graph of the function at only one point

So, the answer will be option 4 as shown in the following figure: