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Given that spending for a certain household will always include a base amount of $1000/month, and that additional spending is equal to half of any income earned, we can predict household spending with a model y=b+mx, where

Respuesta :

With the straight line equation, we can assume y = household spending, x is the income earned monthly, and b would be the base amount spent per month ($1000). m = 1/2 of the income that is spent (additional spending).
Therefore our equation takes shape as follows:
y = 1/2($income) + $1000 

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