Réponses

  • Utilisateur Brainly
2014-04-27T19:52:06+02:00
Fonction affine  =ax+b



f(1)= -2  se traduit par 1a+b = -2 
f(-3)= 10 ................... -3a+b = 10


on a le systeme
a+b = -2
-3a+b = 10

-1(a+b) = -2
-a-b = 2

-a-b = 2
-3a+b = 10
-4a = 12
-a = 3
a = -3

a+b = -2
-3+b = 2
b = 3+5
b = 5

f(x) = -3x+5