Предмет: Математика, автор: Отличница111103

Здравствуйте! Подскажите пожалуйста решение.
Принадлежат ли графику функцииу=3х-|х|+1 точки:
а)А(-1;-3);
б)В(2;4)?

Ответы

Автор ответа: karina2824
0
3х-|х|+1=
=3(-1)-1+1=
=-3-1+1=-3 принадлежит

3х-|х|+1=
=3×2-2+1=
=6-2+1=5 не принадлежит

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