SOLUTION: I want to use my weight lose as an equation problem. How would I do this. I lost weight over a two and half years. I weighed 398 lb I now weigh 175 lbs. I want to use this as a pr

Question 763209: I want to use my weight lose as an equation problem. How would I do this. I lost weight over a two and half years. I weighed 398 lb I now weigh 175 lbs. I want to use this as a project for class. I would like to use variable maybe. I even tried sloping but it is not coming out right. I started August 2010. Is it something else I can do other than just subtracting
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
I want to use my weight lose as an equation problem. How would I do this. I lost weight over a two and half years. I weighed 398 lb I now weigh 175 lbs. I want to use this as a project for class. I would like to use variable maybe. I even tried sloping but it is not coming out right. I started August 2010. Is it something else I can do other than just subtracting
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Unless you have data, dates and weight, you have to assume it's linear or some other shape.
Linear is the simplest, assumes consistent # of pounds per week, or month.
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Aug 2010 to present is 27 months
398 - 175 = 223 pounds
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Slope = 223/27 =~ 8.26 pounds/month
Since it's loss, use -8.26 lb/mo
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--> weight at t months past Aug 2010 is
w = 398 - 8.26*t, w in pounds, t = # of months past Aug 2010

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