Given the function f(x) = 3x-4/5 , which of the below expressions is correct

f(x)=3x−45 f ( x ) = 3 x - 4 5. Replace f(x) f ( x ) with y y . y=3x−45 y = 3 x - 4 5. Interchange the variables. x=3y−45 x = 3 y - 4 5. Solve for y y .

the final function for the graph becomes x-2=-1. before graphing you solve the equation, where x=1. then graph accordingly.   ( on the x-axis, 1 on the line will possess a vertical line.)