Answer:
A) graph shown in figure-1
B) The functions f(x) and g(x) are inverses of each other.
Step-by-step explanation:
A ) The graph of f(x) and g(x) is shown in figure-1,
the graph f(x) = 2x + 5 is shown by blue colored line and [tex]g(x)= \frac{x-5}{2}[/tex]
B) To check the function f(x) is inverse of g(x), we put the value of g(x) in f(x)
[tex]f(x) = 2\frac{x-5}{2} + 5[/tex]
[tex]f(x) = x-5 + 5[/tex]
[tex]f(x) = x[/tex]
now, put the value of f(x) in g(x)
[tex]g(x)= \frac{2x + 5-5}{2}[/tex]
[tex]g(x)= \frac{2x}{2}[/tex]
[tex]g(x)= x[/tex]
This shows that, The functions f(x) and g(x) are inverses of each other.