Question

Please help! I am stuck on this

Answer 1

c.

Explanation:

Assuming we are not restricting the domain of f, the inverse isn't a function

`\frac{1}{ {x}^(2) } - 7`

`y = \frac{1}{ {x}^(2) } - 7`

`x = \frac{1}{ {y}^(2) } - 7`

`x + 7 = \frac{1}{ {y}^(2) }`

`{y}^(2) = (1)/(x + 7)`

`y = \sqrt{ (1)/(x + 7) }`

Since square root are Positve or negative, the function will not be a function.

The correct answer is c.