Question 614978
Cost of car $158.60 a month and 39 cents a mile for gas, oil and maintenance. Find values for m + b so that y = mx+b models the monthly cost of driving the car x miles. What does the value of b represent?
**
y=mx+b
m=slope of line=.39/mile
b=y-intercept=158.60
equation: y=.39x+158.60 (monthly cost of driving the car x miles)
The value of b represents a fixed cost regardless of the miles driven.