The cost of a taxicab ride is a function of the distance it must travel. The cost of the ride of 3 miles is $18, and the cost of a 6 mile ride is $24. whats the rate of change

Answer 1

3 cost 18

6 costs 24

y = (24-18)/(6-3)x +b

y = 2x +b

18 = 6+b

b = 12

y = f(x) = 2x +12 $12 charge + $2 per mile