MODELING REAL LIFE The table represents the time x (in minutes) and the distance y (in miles) you bike.

Time, x 30 40 50 60
Distance, y 6 8 10 12

a. Write an equation in point-slope form that represents distance as a function of time.

b. interpret the slope and y-intercept

c. how far can you bike in 4 hours?
justify your answer