what is the effect on the graph of f(x)= 1/x when it is transformed to g(x)= 1/x-7?
A. The graph of f(x) is shifted 7 units up
B. The graph of f(x) is shifted 7 units to the left
C. The graph of f(x) is shifted 7 units down
D. The graph of f(x) is shifted 7 units to the right