heyy.. i need to graph the following on my TI-83 plus in parametric mode.

y=2.5t^3-15t^2 and x= -1. i pretty much figured that one out, but i need to get the velocity, displacement, and acceleration equations and graph them. Thanks for ur help!! also, if its not too much trouble, a little description of wha it looks like would be great so i know i have the right graph