6x ² +10x−1 and -5x²-2x+1−5x 2 −2x+1

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

Which one ? is the answer and how to find this answer

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?