The ph of a particular solution is given by, ph= -log(x-2), where x represents the concentration of the hydrogen ions in the solution, in moles per liter. which graph models the ph of this solution? these are the answer choices:

Remember that argument (the thing inside the parenthesis) of a logarithm can't be zero, so our graph will have a vertical asymptote at: also, notice that the coefficient of our logarithm is negative (-1), so the function is decaying; in other words, as the concentration of hydrogen () increases  the ph decreases.  taking all of this into account, we can conclude that the graph of  ph= -log(x-2) is: