Sun, a kayaker, paddles 8 miles upstream (against the current) in 2 hours. Returning to her original location, she paddles downstream (with the current) the same distance in 1 hour. The equations represent x , the paddling speed, and y , the speed of the current. 2 times open paren x minus y close paren is equal to a b times open paren x plus y close paren is equal to 8 Which are true? Choose two correct answers.