Répondre :
bonjour
A ( 1 ) = 3 et B ( 4 ) = 2
( 2 - 3 ) : ( 4 - 1 ) = - 1 /3
ax = - x /3
B ( 4 ) = 2
4 * - 1/3 + b = 2
- 4/3 + b = 2
b = 4/3 + 6 /3 = 10 /3
f (x) = - x /3 + 10 /3
A ( 1 ) = 1 * - 1 /3 + 10 /3 = - 1 /3 + 10/3 = 9 /3 = 3
bon WE
bonjour
A ( 1 ) = 3 et B ( 4 ) = 2
( 2 - 3 ) : ( 4 - 1 ) = - 1 /3
ax = - x /3
B ( 4 ) = 2
4 * - 1/3 + b = 2
- 4/3 + b = 2
b = 4/3 + 6 /3 = 10 /3
f (x) = - x /3 + 10 /3
A ( 1 ) = 1 * - 1 /3 + 10 /3 = - 1 /3 + 10/3 = 9 /3 = 3
bon WE