Question

How do you graph `f(x)=3-sqrt(x-2)`?

Answer 1

Have a look:

Explanation:

You first need to check which `x` values you can use. The argument of your square root must be bigger or equal to zero (you cannot have a negative argument). So you need:
`x-2>=0`
i.e. `x>=2`
To plot your function we try `x` values that gives you an "easy" square root to evaluate, such as `2,3,6,11,18,27...`: