Assume that the salesofacertain appliance dealerare approximated by a linear function. Suppose sales were $8000 in 1982 and $73,500 in 1987. Let x =0 represent 1982. write equation

Solution:

X=0, y=8000

X=5, y=73500

so

the slope is 13100

the equation is y= 13,100x+8,000