Question

Given that `f(x) = x/(5-x)`, what is `f(-4/5)`?

Answer 1

`-4/29`

Explanation:

`x=-4/5`

`5-x=5-(-4/5)`

`=5+4/5`

`=25/5+4/5`

`=29/5`

Thus

`x/(5-x)=(-4/5)/(29/5)`

Simplifying

`f (-4/5)=-4/29`