# Linear equation

• April 27th 2010, 04:53 PM
Linear equation
A small business purchases equipment for \$1000. After 10 years the salvage value will be \$200. Write a linear equation for the value v of the equipment during its 10 years of use. (use straight line depreciation with t=0 when the equipment is purchased)
• April 27th 2010, 05:43 PM
skeeter
Quote:

Originally Posted by bready
A small business purchases equipment for \$1000. After 10 years the salvage value will be \$200. Write a linear equation for the value v of the equipment during its 10 years of use. (use straight line depreciation with t=0 when the equipment is purchased)

(time in years ,value in \$)

you have two sets of coordinates (t , v) ...

(0,1000) and (10,200)

find the slope between the two points and find $v$ as a linear function of $t$