Графично решаване НА системи линейни уравнения

8. КЛАС

TCH

 

 

 Задача 1.  Решете графично системата     4 х - 5 y = 7

                                                                х + 3 y = - 5

               

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 Задача 2.  Решете графично системите:

 

                -3 х +  y = - 10        2 х + 5 y =           - 5 х + 2 y =              х - y = 6

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                 х - y = 2                 2 х - 3 y = - 1           - 5 х + 2 y = 10             - 2 х - 4 y= 1

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Кога система от две линейни уравнения:

 

 Задача 3.  Запишете чeтири системи линейни уравнения с решение:  а) (-3; 1);    б) (-1; -3);     в) (0,2; 0).

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