Réponse :
bonjour
h(3) = 1 et h ( 6) = 3
( 3 - 1 ) / ( 6 -3 ) = 2/3
ax = 2 x /3
h (3) = 1
3 * 2/3 + b = 1
6/3 + b = 1
b = 1 - 2 = - 1
h (x) = 2 x /3 - 1
h ( 6) = 6 * 2/3 - 1 = 12/3 - 1 = 3
h (10) = 10*2/3 - 1 = 20/3 - 3 /3 = 17/3
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