PLEASE HELP WILL GIVE BRAINLIEST AND LOTS OF POINTS

What is the solution to the system of the equations? x = y - 3 x + 3y = 13

Harry’s soccer team plays 2 nonconference games for every 3 games that they play against conference opponents. if y represents the number of nonconference games and x represents the number of conference games, which equation best models this proportional relationship? a)y=2/3 x b)y=3/2 x c)y = 2x d)y = 6x

Ineed to know the answer to this algebra question.