math

For tax purposes, you may have to report the value of your assets, such as cars or refrigerators. The value you report drops with time. "Straight-line depreciation" assumes that the value is a linear function of time. If a $1020 refrigerator depreciates completely in seven years, find a formula for its value as a function of time. (Let x represent the time in years and y be in terms of dollars.)

I thought it'd be y= -1020/7 +1020 but I was told that I was wrong. Please help me figure this question out!

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  1. I posted this question yesterday and I was told I was correct but for some reason the online hw website will not take it.

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  2. If you entered it the way you typed it above, I noticed you left out the variable for time

    it should be y = -1020/7 x + 1020
    or try : y = (-1020/7)x + 1020

    checking,
    for now, x = 0, x = 0 + 1020 = 1020, checks!
    for 7 years from now,
    x = 7
    y = (-1020/7)(7) + 1020 = 0 , checks!

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  3. Thank you so much! That worked!

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