What is the domain of the function log(x-4) +4?

The log of 0 is not defined, so the criterion to use here is that the input to the log function must be greater than zero.  

Thus, x-4 ≥ 0, or x ≥ 4 (answer)

Ifound this on google “that means that the graph of a function with direct variation has these features: it is a straight line: because the slope is the ratio y/x = k. it passes through the origin (0,0): because y = kx = k (0) = 0.” i hope this you for what your looking for