Question

Given f(x) = - = -X 5, solve for x when f (x) = -3.

Answer 1

The given expression : f(x) = - x - 5

to find the value of f(x) at x = (-3)

Substitute the value of x = (-3)

`\begin{gathered} f(x)=-x-5 \\ at\text{ x = (-3)} \\ f(-3)=-(-3)-5 \\ f(-3)=3-5 \\ f(-3)=(-2) \end{gathered}`

So, at x = (-3), f(x) = (-2)

Answer : f(x) = (-2)