Question

suppose you buy a computer for $2400, and after one year it is worth $1800. let y be the value of your computer and t be the number of years since you purchased it. assume that it continues to depreciate at the same rate. what is the equation of a line that represents the value of your computer as a function of time

Answer 1

Let x be the depreciating rate.
$y=2400-xt \\ \\ 1800=2400-x(1) \\ \\ -x= 1800-2400 \\ \\ -x=-600 \\ \\ x=600 \\ \\ y=2400-600t$