Ohm's Law graphing inversed gradient value

[Casius]

Homework Statement

Hey all. This is about Ohm's Law (and specifically resistance). When you plot the change in current vs the change in voltage you should get a linear trend line (providing it is from an ohmic device). The gradient should be the resistance. My questions is why does the gradient value need to be inversed to find the true resistance value?

Relevant Equations

y = mx +c

Hey all. This is about Ohm's Law (and specifically resistance). When you plot the change in current vs the change in voltage you should get a linear trend line (providing it is from an ohmic device). The gradient should be the resistance. My questions is why does the gradient value need to be inversed to find the true resistance value?

 

[haruspex]

Homework Statement:: Hey all. This is about Ohm's Law (and specifically resistance). When you plot the change in current vs the change in voltage you should get a linear trend line (providing it is from an ohmic device). The gradient should be the resistance. My questions is why does the gradient value need to be inversed to find the true resistance value?
Relevant Equations:: y = mx +c

Of voltage and current, which are you plotting as y and which as x?

 

[Casius]

Of voltage and current, which are you plotting as y and which as x?

Voltage x, current y

 

[haruspex]

Voltage x, current y

So you have I=mV+c.
What would m be there?