Sagot :
bonjour
f ( 2) = - 6
f (x) = - 6/2 = - 3
f (x) = - 3 x
g ( - 4 ) = - 20
g (x) = - 20 / -4 = 5
g (x) = 5 x
f (3) = - 6
f ( x) = - 6/3 = - 2
f (x) = - 2 x
f ( 8) = 4
f (x) = 4 /8 = 1 /2
f (x) = x /2
Explications étape par étape:
[tex]f(x) = ax \\ f(2) = 2a = - 6 \\ 2a = - 6 \\ a = - 3 \\ f(x) = - 3x[/tex]