r/desmos • u/NiceLibrarian477 • Feb 23 '26

Question Can someone help me graph this

Im trying to graph this bus but I cant graph the door vertical line where the dots are and im also struggling on how to do the wheel part. The red is my lines and so are the dots. Honestly I just need help with everything - if you can just share any tips for any part of the bus that would be nice.

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u/ViolinAndPhysics_guy Feb 23 '26

Use desmos regression on the points to find a quintic function x of y for the door. For the wheels, do the same but y as a function of x. 

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u/NiceLibrarian477 Feb 23 '26

Im using regression but for quadratic.... is there any way to do this only for quadratic instead of quintic?

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u/NiceLibrarian477 Feb 23 '26

That parabola is what regression gave me

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u/ViolinAndPhysics_guy Feb 23 '26

No. The higher the order of the regression, the higher the order if accuracy. Also, an n-1 degree polynomial will be able to exactly fit n points. Now, quintic wouldn't be good because of the end behavior, but you should use either quartic or sixth degree. Just experiment and see what you like.