bonsoir
f (x) = - 3 x + 2
il suffit de remplacer x
f ( 1 ) = - 3 + 2 = - 1
f ( 0 ) = 2
f ( - 2 ) = 6 + 2 = 8
f ( 2/3 ) = - 6/3 + 2 = - 2 + 2 = 0
Tu remplaces x par la valeur donnée:
a) f(1) = (-3) * 1 + 2 = -3+2 = -1
b) f(0) = (-3) * 0 + 2 = 0 + 2 = 2
c) f(-2) = (-3) * (-2) + 2 = 6+2 = 8
d) f(2/3) = (-3) * 2/3 + 2 = -6/3 + 2 = -2+2 = 0
