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2014-04-10T21:56:12+02:00
La fonction affine continet les points (3; 17) et (7; 33)
y =ax+b
a = (33-17)/(7-3) = 16/4 = 4
y = 4× + b
17 = 4.3 + b => b= 17 - 12 = 5
y = 4× + 5
1er chiffre 4.x + 5 = 37 => 4× = 32 => × = 8
2e chiffre 4.×+ 5 = 9 => 4× = 4 => × = 1
3e chiffre 4.× + 5 = 17 => × = 3
4e chiffre 4.×+ 5 = 29 => × = 6