I created a photo at the bigging of the timeline to be scaled at 0,0. As it goes down I want it to 100%, and when it reaches the bottom of my stage area I to just have the photo just disapear.
When I tried this with scale x,y it slowing shrinks as it goes down. I don't want it to slowly shrink as it goes down. I just want it to just disapear when it reaches the botton.
I'm not sure I'm quite clear as to what you want. You can make things "jump" by using an instant transition (turn off auto-transition mode - click on the button in the Timeline panel).
You can also delete a transition so that it "jumps" the way you want it by right clicking on the transition and deleting the transition. It should leave the keyframes.
Hope that helps,