Understanding graphs study guide - Constrgerea bugetar...

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Constrâgerea bugetară. Dreapta bugetului DACĂ : V = venitul lunar p x = preţul bunului x p y = pre ţul bunului y x = cantitate din bunul x posibil de cumparat y = cantitate din bunul y posibil de cumparat ATUNCI : Ecua ţia bugetului este : V = x p x + y p y (1) Reprezentare grafic ă a dreptei (1) Gf Ox y = 0 V = x p x x = V / p x A( V/p x ; 0) Gf Oy x = 0 V = y p y y = V / p y B( 0 ; V/p y ) Panta liniei bugetului se determin ă astfel : rezolv ecua ţia (1) în raport cu y V = x p x + y p y V – x p x = y p y Împart fiecare membru al agalităţii la p y V – x p x = y p y | : p y V/p
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