Question Help An international food festival charges for admission and for each sample of food. Admission and 5 samples cost $9.25 Admission and 8 samples cost $12.25. Write a linear function rule to model the cost y for any number of samples x.

Guest Mar 8, 2017

#1**0 **

y=mx+b

you have TWO data points given (5,9.25) and (8, 12.25)

Find slope, m= (y1-y2) / (x1-x2)

(9.25-12.25) / (5-8) = -3/-3 = 1

so y= mx + b now becomes y = (1) x + b Substitute in one of the points to find b :

9.25 = 5 + b b= 4.25

so your equation is now

y= x + 4.25 which shows the admission is 4.25 and each sample costs 1.00

ElectricPavlov
Mar 8, 2017