Question

Suppose that in 2001, the average cost of a gallon of milk was $1.89. In 2007 the average price was $4.41.
Assuming the relationship is linear, find the equation of the line that models the price of milk over time.
Answer
y = 0.42x + 1.89
y = 6x + 1.89
y = 0.42x + 4.41
y = 6x + 4.41