This is my 3D line graph project. I have stopped work on it, but I may do more in the future. It currently works by taking your formula in the code section near the bottom, and then it will draw a line based on that. The only problem I have encountered is when it tries to draw something with multiple solutions, it can only draw one. This is a big problem for 3D constructions, i.e. x^2+y^2+z^2=25 should give us a sphere but my line graph seems incapable of drawing this.