how can i calculate the slope of the best-fit line in a length v.s. resistance(x=length;y=resistance) graph where the plotted points are: (5.1,1.6)(11.0,3.8)(16.0,4.5)(18.0,5.9)(23.0,7.5)?
Personally, I would graph the points, and draw a best fit line, then measure the slope of it.
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