SOLUTION: A school district purchases a high volume printer, copier, and scanner for 20,000. After 10 years, the equipment will have to be replaced. Its value at the time is expected to be 2

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A school district purchases a high volume printer, copier, and scanner for 20,000. After 10 years, the equipment will have to be replaced. Its value at the time is expected to be 2      Log On


   

Question 1146617: A school district purchases a high volume printer, copier, and scanner for 20,000. After 10 years, the equipment will have to be replaced. Its value at the time is expected to be 2,600 select a linear equation giving the value of the equipment during the 10 years it will be in use
Answer by greenestamps(13200) About Me  (Show Source):
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One simple form of a linear equation specifies the starting value and the rate of change (slope):

y+=+mx%2Bb

The slope is m, the starting value is b.

The starting value is 20000.

The change in value is from 20000 to 2600 in 10 years. That's a change of -17400 in 10 years, a rate of -17400/10 = -1740 per year. So

y+=+20000-1740x

where y is the value and x is the time in years since the purchase.

Your post says "select" a linear equation, but you don't show the choices.

Find one which is equivalent to the one shown.