it all seemed pretty easy to start off with i've got all my results.(adsbygoogle = window.adsbygoogle || []).push({});

Voltage against current with a variable thing. but i can't do the equation, i have drawen up the graphs and followed the formulas but the results all come out wrong.

formulas: m=y/x m=volt/amp r=1/m which is the resistance

resistivity= r=p*a/l p=r*l/a

After competing these formulas the result comes out wrong HELP

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# RESISTIVITY (help)

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