Evaluate Functions from Graph...please help!

Can you guys plz answer this question in order and quickly plz i will give 30 points

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?