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yoki2007
@yoki2007
January 2021
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Bonjour excuser moi de vous déranger pouvez vous m'aider svp
Soient les points A(9;−9), B(4;−5) et C(3;−2)
Donner une équation de la droite parallèle à (AB) et passant par C .
merci d'aavance !
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trudelmichel
Verified answer
Coefficient directeur
y(b)-y(a)/x(b)-x(a)
(-5+9)/4-9)=4/-5=-0.8
y=-0.8+b
la droite parrallele à AB aura le me^me coefficient directeur
y(c)=-0.8x(c) +b
-2=-0.8 x 3 +b
-2=-2.4 +b
b=-2+2.4
b=0.4
équation y=-0.8+0.4
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Verified answer
Coefficient directeury(b)-y(a)/x(b)-x(a)
(-5+9)/4-9)=4/-5=-0.8
y=-0.8+b
la droite parrallele à AB aura le me^me coefficient directeur
y(c)=-0.8x(c) +b
-2=-0.8 x 3 +b
-2=-2.4 +b
b=-2+2.4
b=0.4
équation y=-0.8+0.4