Предмет: Алгебра, автор: matematichka19

Какая из точек принадлежит графику функции, заданной формулой у=2х?
1) А (2;4)
2) В (-2;4)
3) С (-2;0)
4) D (2;-4)

Ответы

Автор ответа: alexandrizmodenov199
5

y=2x

1) А (2;4)  

x=2 y=4 Проверяем 4=2*2 4=4

Точка А (2;4) принадлежит

2) В (-2;4)  

x=-2 y=4 Проверяем 4=-2*2 4 не равно -4

Точка В (-2;4) не принадлежит

3) 3) С (-2;0)

x=-2 y=0 Проверяем 0=-2*2 -4 не равно нулю

Точка 3) С (-2;0) не принадлежит

4) D (2;-4)

x=2 y=-4 Проверяем -4=2*2 -4 не равно 4

Точка D (2;-4) не принадлежит

Автор ответа: bersh54
2
Только точка A принадлежит графику функции y=2x
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