Okay I have a scatterplot, so I have points on the graph. I need to use these points (without using regression on my TI-83) to discover a cubic function that would fit the data (as a sort of trend line). How do I go about this?

I looked up the graphing form of the cubic function:
y=a((x-h)^3)+k

But have no idea how to progress from here. Guidence, please?

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