Ryan, jessica, and mark each solved this system of equations. all of their answers are different. find and explain the mistakes. what is the correct answer?

y = 3x + 2
6x – 2y = 10

ryan’s
i solved by adding the equations. the solution is .

y = 3x + 2 → 3x + y = 2
6x – 2y = 10 → 3x – y = 5
6x = 7
x =

6x – 2y = 10 → 6 – 2y = 10

7 – 2y = 10
–2y = –3

y = -

jesse’s
i used matrices. the solution is .

mark’s
i graphed the equations. the lines are parallel and do not intersect, so there is no solution.