Répondre :
bonjour
f ( 0 ) = 3 et f ( 3 ) = - 3
( - 3 - 3 ) : ( 3 - 0 ) = - 6 /3 = - 2
ax = - 2 x
f ( 0 ) = 3 donc b = 3
f (x) = - 2 x + 3
bonjour
f ( 0 ) = 3 et f ( 3 ) = - 3
( - 3 - 3 ) : ( 3 - 0 ) = - 6 /3 = - 2
ax = - 2 x
f ( 0 ) = 3 donc b = 3
f (x) = - 2 x + 3