bonjour
f ( x) = - 2 x + 3
f ( -4) = 8 + 3 = 11
f (x) = 2 x - 5
2 x - 5 = 1
2 x = 6
x = 3
f (x) = 4 x /3 + 3
A ( - 3 ) = - 12/3 + 3 = - 4 + 3 = - 1 donc A
3 x - 1
