bonjour
f ( -3 ) = - 6 et f( 0 ) = 6
( 6 + 6 ) / ( 0 + 3 ) = 12/3 = 4
ax = 4 x
f (0) = 6 donc b = 6
f (x) = 4 x + 6
g (x) = - 5 x - 2
g ( -3) = - 3 * -5 - 2 = 15 - 2 = 13
4 x + 6 = - 5 x - 2
4 x + 5 x = - 2 - 6
9 x = - 8
x = - 8/9
- 8/9 a la même image par les 2 fonctions
f ( - 8/9 ) = - 8/9 * 4 + 6 = - 32/9 + 6 = -32/9 + 54/9 = 22/9
g ( - 8/9) = - 8/9 * - 5 - 2 = 40/9 - 2 = 40/9 - 18/9 = 22/9
