Question about Creating a Best fit arch with 4 points

Hello, I am trying to get arch equation of someones teeth by only using 4 points on the left side of the arch. I am also counting 0,0 at the vertex of the arch (the very front of the teeth). One last thing, the best fit line does not need to go though any of the points

I am having trouble on how I can even start this, Thank you for taking the time to view my question

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Originally Posted by grimatoma

Hello, I am trying to get arch equation of someones teeth by only using 4 points on the left side of the arch. I am also counting 0,0 at the vertex of the arch (the very front of the teeth). One last thing, the best fit line does not need to go though any of the points

I am having trouble on how I can even start this, Thank you for taking the time to view my question

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I can't help you with your answer, but I can tell you what you need to do.

Most problems with fitting to data are linear best fits to a data set. What you are looking to do is a quadratic best fit.

To get a quick answer, here will do. I recommend learning how to do it by hand. Given about 20 minutes I could show you how to get the results, but you might find that Googling quadratic regression might be more help.

-Dan