Question

How to graph f(x) = square root of 2x-4 ??

Answer 1

It depend whether you are asking if `f(x) = sqrt (2x-4) or sqrt 2x-4`
In either case you would start off with the same steps..

Explanation:

Start by stating where `x` is defined...
In the equation `f(x) = sqrt (2x-4` , the domain of the function would be `[2, oo)`
So you can start the equation at x=2 and get the point (2,0)
Then from there I would suggest pick two more `x` values, and plug them into the equation `f(x) = sqrt (2x-4` two get two more points such as `(2.5,1) and (4,2)`
Plot these three points on a graph and then continue the line leftward. The graph then should resemble this one below graph{sqrt (2x-4 [-10, 10, -5, 5]}
I hope this helped....