Which table represents a linear function?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10