SOLUTION: The value, v of a shop-keeps inventory software program is given by v = -1/2t + 6, where t is the number of years since the shop-keep bought the program. What is it worth 6 years a

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Question 536833: The value, v of a shop-keeps inventory software program is given by v = -1/2t + 6, where t is the number of years since the shop-keep bought the program. What is it worth 6 years aftr it's first purchase? so far I have: t=0 and v=6, is this correct? also I need to see the graphing, everytime I try it is not right... can you help please? I'm 52 and it's been a while since I've had to do this... thank you, have a happy day!!
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
When bought t=0 v=6 the value was 6.
Six years after the software was bought t=6 and
v=-%281%2F2%29%2At%2B6=-%281%2F2%29%2A6%2B6=-3%2B6=3
If you plot value versus time (in years) since the program was bought you will have something like this (pretend it's t instead of x for the horizontal axcis scale and v instead of y in the vertical axis):
graph%28+400%2C+200%2C+-2%2C+14%2C+-1%2C+7%2C+6-x%2F2+%29v=-%281%2F2%29%2At%2B6is the equation of a straight line that goes through y=6 (or v=6) as a value for the function when the independent variable is x=0 (or t=0). and goes down by 1/2 each time you go 1 unit to the right (one unit increase in x or t).