Question 1072549
This is a straight line relation, and the slope
does not change
slope = [ change in cost ] / [  time in yrs ]
{{{ ( 140 - 960 ) / ( 6 - 0 ) }}}
{{{ ( -820 ) /6 = -136.667 }}}
Since the slope doesn't change, I can say:
Let {{{ v }}} = value after 4 yrs
{{{ -136.667 = ( v - 960 ) / ( 4 - 0 ) }}}
{{{ v - 960 = -546.667 }}}
{{{ v = 413.333 }}}
The printer will be worth $413.33 in 4 yrs
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Check:
I can also say:
{{{ ( 140 - 413.333 ) / ( 6 - 4 ) = -136.667 }}}
{{{ -273.333/2 = -136.667 }}}
{{{ -136.667 = -136.667 }}}
OK
Definitely check my math