For each of the functions below, state the domain and range, the restrictions, the intervals of increasing and decreasing, the roots, y-intercepts, and vertices.

Question

b)
f(x)=+squareroot x−2

Answer 1

f(x) = √(x-2)

You know that the domain of √x is x>=0.

So, you need x-2 >= 0

Not too hard, eh?