1) Вiдповiдь под буквой Г) 10х = 1 линейное рiвняння.
2) Вiдповiдь под буквой В) 
3) 
А) (2; 3) => 2+2·3 = 8
8=8
Б) (10; -1) => 10+2·(-1) = 8
8=8
В) (-8; 0) => -8+2·0 = 8
- 8≠8
Г) (-2; 5) => -2+2·5 = 8
8=8
Вiдповiдь под буквой B) (-8; 0)
4) 





Вiдповiдь под буквой B) (6; 1)
5) Вiдповiдь под буквой А) k=1
6) Вiдповiдь под буквой B) 