Sagot :
bonjour
f ( 0 ) = 2 et f ( 5) = - 3
( - 3 - 2 ) / ( 5 - 0 ) = - 5 / 5 = - 1
- 5 + b = - 3
b = - 3 + 5 = 2
f (x) = - x + 2
f (x) = - 2
- x + 2 = - 2
- x = - 2 - 2
- x = - 4
x = - 4
f ( - 4) = - 2
bonjour
f ( 0 ) = 2 et f ( 5) = - 3
( - 3 - 2 ) / ( 5 - 0 ) = - 5 / 5 = - 1
- 5 + b = - 3
b = - 3 + 5 = 2
f (x) = - x + 2
f (x) = - 2
- x + 2 = - 2
- x = - 2 - 2
- x = - 4
x = - 4
f ( - 4) = - 2