bonjour
f (x) = 5 x - 7 et g (x) = - 3 x + 1
f ( 0) = - 7 et g (0) = 1
f ( 1) = - 2 et g ( 1) = - 2
point d'intersection = ( ( 1 : - 2 )
h (x) = - 2 x /3 - 4
h ( 0) = - 4
h ( 3) = - 6 *3 - 4 = - 2 - 4 = - 6
h ( - 3 ) = 6/3 - 4 = 2 - 4 = - 2
tu peux en calculer 2 autres
- 2 x /3 - 4 = 5
- 2 x /3 = 5 + 4
- 2 x /3 = 9
- 2 x /3 = 27/3
- 2 x = 27
x = - 27/2 = - 13.5
