How do the graphs of f(x)=x and g(x)=5x relate? a. the graph of g(x) is the graph of f(x) compressed horizontally by a factor of 5 c. The graph of g(x) is the graph of f(x) compressed horizontally by a factor of 1/5 b. The graph of g(x) is the graph of f(x) compressed vertically by a factor of 5 d. The graph of g(x) is the graph of f(x) compressed vertically by a factor of 1/5