Answer:
The graph of  f(x) passes through (1,1) , (2,1.4...), (3,1.7....),(4,2)......
As, this curve is not linear.
To find the graph of a inverse function if a function is given
As we can see that ,
√1=1
√2=1.414..
√3=1.732..
√4=2
it means, √x=y is f(x).
So, to find the inverse of f(x), follow the procedure
Squaring both sides
Replace x by y and y by x to get inverse of f(x)
So,there will be two inverses of f(x)
1. x=√y
2. x= -√y
Domain of g(x)∈[0,∞], means y≥0.
Option A, 2nd graph below. and Option B. 3 rd Graph below is true regarding graph of g(x).
 
        
             
        
        
        
To solve this problem you must apply the proccedure shown below:
 1- You have that the equation of the line is:
 
 Where  is the slope and
 is the slope and is the y-intercept.
 is the y-intercept.
 2- Based on the information given in the problem, the lines  and
 and are parallel, which means that both have the same slope. Therefore, you can calculate the slope of
 are parallel, which means that both have the same slope. Therefore, you can calculate the slope of  :
:
 
 
 3- Use the coordinates of the point  to calculate the y-intercept:
 to calculate the y-intercept:
 
 4. Solve for  :
:
 
 5. The equation of the line  is:
 is:
 
 The answer is: 