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Ok so i am doing a lab...and i graphed my data points and my slope turned out to be negative.

The y-axis is in Newtons and the x-axis is in Meters.

So my teacher said the the slope=k (constant)

period of an oscillation formula: T=2pi(m/k)^1/2

But my k is negative so when i substitute all my numbers, i get a "Nonreal answer"

What did i do wrong?

The y-axis is in Newtons and the x-axis is in Meters.

So my teacher said the the slope=k (constant)

period of an oscillation formula: T=2pi(m/k)^1/2

But my k is negative so when i substitute all my numbers, i get a "Nonreal answer"

What did i do wrong?

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