Question

Please help if you understand this
Which is the graph of the identity function

Answer 1

Answer:

Please check the explanation.

Step-by-step explanation:

The function $f(x)=x$ is called the identity function.

In other words, x GOES IN, X COMES OUT.

From all the graphs, the 3rd graph represents the identity function as the input and output of this graph remains the same.

The 3rd graph indicates that:

• at x = 1, y = 1

• at x = 2, y = 2

• at x = -1, y = -1

• at x = -2, y = -2

So, it is clear that input and output of this 3rd graph remains the same.

The solution graph is also attached below.