Hello, I was wondering if anyone could help me out with this: I have a TI-83+ SE. I have gotten the formula for the path of a projectile without air-resistance. It is: y= ((Voy)/(Vox))X)-(g/(2(Vox^2)X^2))) Now, I have a question. How do I program it to make it graph the parabola that I am supposed to get, and how can I get it to find me undefined variables (I have a basic grasp of programming, though this is beyond my league). Any help would be greatly appreciated, thanks.