Bonjour ,
1 . g(x) = 2x - 3
Pour x = 5 ,
g(5) = 2×5 - 3
g(5) = 10 - 3
=> g(5) = 7
Pour x = -4 ,
g(-4) = 2× (-4) - 3
g(-4) = -8 -3
=> g(-4) = -11
Pour x = 3/2 ,
g(3/2) = 2×3/2 -3
g(3/2) = 3-3
=> g(3/2) = 0
2 . Pour g(3/4) ,
g(3/4) = 2×3/4 -3
g(3/4) = 3/2 -3
=> g(3/4) = -3/2
Voilà , j'espère t'avoir aidé !