$\"\"$

The functions are $\"\"$ and $\"\"$ .

A function $\"\"$ is the inverse of the function $\"\"$ if $\"\"$ for each $\"\"$ in the domain of $\"\"$ .

and $\"\"$ for each $\"\"$ in the domain of $\"\"$ .

$\"\"$

Since $\"\"$ , the functions $\"\"$ and $\"\"$ are inverse functions.

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Draw a coordinate plane.

Graph the functions $\"\"$ and $\"\"$ .

Graph:

$\"\"$

Observe the graph: $\"\"$ and $\"\"$ have reflective property.

And the graphs of the two functions symmetric about the line $\"\"$ .

Hence the functions $\"\"$ and $\"\"$ are inverse functions of each other.

$\"\"$

$\"\"$ and $\"\"$ are inverse functions.