Bonjour,
f(2) = -4/7 * 2 + 3/14
f(2) = -8/7 + 3/14 = -16/14 + 3/14
f(2) = -13/14
f(-5) = -4/7 * -5 + 3/14
f(-5) = 20/7 + 3/14
f(-5) = 40/14 + 3/14 = 43/14
Réponse :
Explications étape par étape
Bonjour
Soit f(x) = (-4/7)x+3/14
Calcul les images suivantes:
a)f(2)
f(2) = (-4/7) * 2 + 3/14
f(2) = -8/7 + 3/14
f(2) = -16/14 + 3/14
f(2) = -13/14
b)f(-5)
f(-5) = (-4/7) * (-5) + 3/14
f(-5) = 20/7 + 3/14
f(-5) = 40/14 + 3/14
f(-5) = 43/14