Ohms Lawohms lawohms law

Please work out in excel and graph:
Remember that Ohms Law states that
V = I R
Where V is the voltage, I is the current and R is the resistance. Also remember that now all materials are Ohmic.
Take these two sets of data and plot them.
Are they Ohmic? How can you determine this?
If they are Ohmic, what is the resistance of the circuit?
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no q her on the attach

if current is proportional to potental difference why we write as V prop to I. as V never depends on I where as I depends on V.