Which of the following is true regarding the graph of f(x)=log2(x)f(x) = \log_2(x)f(x)=log2(x)?
The graph passes through (0,1)(0, 1)(0,1).
The graph is defined for all real numbers xxx.
The graph has a vertical asymptote at x=0x = 0x=0.
The function output is always positive.