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Sagot :

Hello

la forme d'une fonction affine

f(x) = Ax + b

on calcule a

f(2)-f(-3) / 2 - (-3) = 1-(-1)/5 = 2/5

f(x) = 2/5x + b

on calcule b

f(2) = 2/5 * 2 + b

1 - 4/5 = b

1/5 = b

f (x) = 2/5 x + 1/5

bonne soirée

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