How about this for a summary?

Ohm's Law states a relationship between three
interdependent variables: voltage (V), current (I), and resistance (R).  R depends on I and V, I depends on R and
V, and V depends on I and R.  The law does not express an
equation in the sense that you can plug in two fixed values
and get an answer.  It is an iterative equation which
converges to a steady state.  In that steady state, you
can measure the three quantities or derive the third after
measuring any two.

Is this a reasonable way to look at it?

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