Предмет: Математика, автор: timchuk99

Выбрать правильное утверждение.

Прямые параллельные, если:

1. они заданы общими уравнениями

2.их направляющие векторы перпендикулярны между собой

3. их направляющие векторы параллельны между собой

4. их нормальные векторы перпендикулярны между собой

5. их нормальные векторы параллельны между собой

6. их угловые коэффициенты в произведении равны -1

7. их угловые коэффициенты противоположные

8. их угловые коэффициенты равны между собой

Ответы

Автор ответа: belalexaand123566

Ответ:

правильный ответ под цифрой 8

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