For income tax purposes, a man uses a method called straight-line depreciation to show the loss in value of a copy machine he recently purchased. he assumes that he can use the machine for 8 years. the following graph shows the value of the machine over the years. use this graph to answer the following question.  
what was the purchase price of the copy machine?
a coordinate system has a horizontal axis labeled years from 0 to 8 in increments of 1 and a vertical axis labeled "value in thousands of dollars" from 0 to 6 in increments of 1. a line falls from left to right and passes through the points (0, 5) and (3, 3.8).
the purchase price of the copy machine was $