bonjour
tu calcules 2 images
d (x) = - 2 x + 1
d (0) = 1
d (2) = - 4 + 1 = - 3
u (x) = 3 x - 4
u ( 0) = - 4
u ( 1) = 3 - 4 = - 1
h (x) = - x + 3
h ( 0) = 3
h ( 3 ) = - 3 + 3 = 0
t (x) = 2 fonction constante donc courbe parallèle à l'axe des abscisses
k (x) = 2.5 x
k ( 1 ) = 2.5
k ( - 1 ) = - 2.5
m (x) = - 2 x - 3
m ( 0 ) = - 3
m ( 2 ) = - 4 - 3 = - 7