Question

ДАЮ МНОГО БАЛЛОВ! ОТВЕТЬТЕ НА ВОПРОСЫ ПО ТАБЛИЦЕ!
1. f (-1) = ?
2. f (½) = ?
3. f (3) = ?
4. f (x) = -1; x=?
5. f (x) = 0; x=?

Answer 1

Ответ:

y = f(x) = 6x-8

f(0) = 6·0-8 = 0-8 = -8

f(1) = 6·1-8 = 6-8 = -2

f(-1) = 6·(-1)-8 = -6-8 = -14

f(x)=0; 6x-8=0 |+8; 6x=8 |÷6; x=

f(x)=2; 6x-8=2 |+8; 6x=10 |÷6; x=

f(x)=-2; 6x-8=-2 |+8; 6x=6 |÷6; x=1