Question 1052323
f(x)=sqrt(2x-6) 
0r
y =  sqrt(2x-6) 
finding the inverse is as simple as "flip-flopping" the x and y, so to speak.
x = sqrt(2y-6)
Squaring both sides...
x^2 = 2y - 6  
x^2/2 + 3 = y