I need help with trigonometry/algabraic geometry!?!?!?

Well in general, I need help with algabraic geometry because I failed both of my trigonometry tests because I do not have a good knowledge of it. Even though I am a gifted math student, and i got my credits this year. i need some help of how to find x/y-interecept forms, and standard form and all that crap (and by crap i mean everything else) i need to know but im dumb. the only thing i know in trigonometry is how to calculate is slope and the angle of elevation but everything else is completeley nonsense to me :((((( PLEASE HELP ME.

I need some guides from websites if you have any please post it here or just answer me straightforward but i know it wont fit lol.