# Gradients?

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• August 27th 2012, 01:33 PM
Tabitha
Gradients?
I have to find the gradients from the information it gives me, it has an example but I have no idea how it gets from there to the answer, the example is:

Equation: R=V/I

Then it says: x axis: voltage
y axis: current

Then it gives the answer: Gradient = 1/R

But I don't understand how to get the answer from the information it gives me?

Any help would be aprecated :)
• August 27th 2012, 02:02 PM
pickslides
Re: Gradients?
I assume V = voltage, is R current?
• August 27th 2012, 02:07 PM
Tabitha
Re: Gradients?
I is current because R is resistance but I don't understand how to get the gradient from it? :)
• August 27th 2012, 02:20 PM
pickslides
Re: Gradients?
Well $R = \frac{V}{I} \implies I = \frac{V}{R}$ which means I and V have a linear relationship. The gradient of this relationship is $\frac{1}{R}$
• August 30th 2012, 05:49 AM
Tabitha
Re: Gradients?
Thank you :)