SOLUTION: An office printer is worth for $42,000 when it is 2 years old. When the printer is 6 years old, the value of the printer is $30,000. If the value of the printer decreases in a l

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Question 1108279: An office printer is worth for $42,000 when it is 2 years old. When the printer is 6 years old, the value of the printer is $30,000. If the value of the printer decreases in a linear fashion, determine the slope and give a practical interpretation of the slope.
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
Youare given 2 points on a straight line
( 2, 42000 )
( 6, 30000 )
Plot time, , on the horizontal axis
Plot value, , on the vertical axis
-------------------------------------
The slope is:
[ change in ] / [ change in ]


dollars/yr
---------------------------
The slope tells you how fast the value is decreasing
It decreases $3,000 each year



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