bonjour
f ( 0) = 1 et f ( 2) = 2
( 2 - 1 ) / ( 2 - 0) = 1 /2 donc ax = x / 2
f ( 0) = 1
0 * 1/2 + b = 1 donc b = 1
f (x) = x / 2 + 1
g (x) = - 3 x+ 2
tu calcules 2 images
g ( 0) = 2
g ( 1 ) = - 3 + 2 = - 1
h (x) = x / 4
h ( 0) = 0
h ( 4) = 4/1 = 1
k ( 1) = 1 et k ( - 3) = 4
( 4 - 1 ) / ( - 3 - 1 ) = - 3/4 donc ax = - 3 x /4
k ( 1) = 1
1 * - 3 /4 + b = 1
- 3 /4 + b = 1
b = 1 + 3 /4 = 7/4
k (x) = - 3 x /4 + 7 /4
m (0.5) = - 2 et m ( 3.5) = 4
( 4 + 2 ) / ( 3.5- 0.5 ) = 6 / 3 = 2 donc ax = 2 x
m ( 0.5) = - 2
0.5 * 2 + b = - 2
b = - 2 - 1 = - 3
m (x) = 2 x - 3
