An isem is purchased in $2004$ for $$545,000,$ and in $2019$ it is worth $$141,500.$

Assuming the item is depreciating linearly with time, find the value $V$ of the item $($in dollars$)$ as a function of time $t($in years since $2004),$ Enter your answer in slope$-$intercept form, using exact nul $v(t)=$