suppose that the population of a certain town, in thousands, was 105 in 1990 and 141 in 2002. Assume that the population growth can be approximated by a straight line. Find the equation of a line which will estimate the population of the town, in thousands in a given year 1990.

Question

suppose that the population of a certain town, in thousands, was 105  in 1990 and 141 in 2002. Assume that the population growth can be approximated by a straight line. Find the equation of a line which will estimate the population of the town, in thousands in a given year 1990.

anonymous · Answer

the equation we want in the end will start with the form of 
y = mx + b

lets have the population be on the y axis 
and year be on the x axis.

we are given two points
(1990, 105)
(2002, 141)

can you find the slope, m, between these two points?