>Is there any way to gaph x= functions on a TI-86? >Are there any programs that will allow me to do this for >equations that can not be solved for y= in order to graph? Yes. Suppose you want to graph x=y^2+y. In Func Mode use: DrInv x^2+x (You will be graphing the inverse of the invverse of y^2+y.) In Param Mode use: xt1=t^2+t and yt1=t Good Luck G. Wardall