DO, -1/2 of X is (2, 0) (4, 0) (-2, 0)

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

How do i do this problem i don't know what to do can u