Shoot hoops, according to urban dictionary is basically an informal way to refering to ''jogar basktball'' and this expression is based on hoops which is a high metal ring which the ball is thrown to score points.
Ex: Sometimes we stopped off at the gym after school and shot some hoops.
Ex: I like to shoot hoops after work.
Jump shot a basktball shot made while jumping = arremesso feito no ar
www.merriam-webster.com/dictionary/jump%20shot
http://www.celticsbrasil.com.br/index.php/glossario-do-basquetebol-parte-1/