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laulau62690
@laulau62690
January 2021
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Bjr, quelqu'un peut m'aider a faire cet exercice? Je galère
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caylus
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Bonjour,
1)
A=(0,2), B=(3,3) =>m=(3-2)/(3-0)=1/3 (AB): y-2=1/3x=>y=x/3+2
C=(0,-3), D=(1,-5)=>m=(-5+3)/(1-0)=-2 (CD): y+3=-2x=>y=-2x-3
2) ayant une mauvaise vue, je dirais (-2,1)
3)y=x/3+2
y=-2x-3
=> x/3+2=-2x-3
=>7/3x=-5
=>x=-15/7 et y= -15/7/3+2=-5/7+2=9/7
(-15/7,9/7)
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laulau62690
merci beaucoup!
caylus
de rien
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Bonjour, pouvez vous m'aider s'il vous plait? Exercice sur les 3 photos ci jointes. Merci d'avance.
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Verified answer
Bonjour,1)
A=(0,2), B=(3,3) =>m=(3-2)/(3-0)=1/3 (AB): y-2=1/3x=>y=x/3+2
C=(0,-3), D=(1,-5)=>m=(-5+3)/(1-0)=-2 (CD): y+3=-2x=>y=-2x-3
2) ayant une mauvaise vue, je dirais (-2,1)
3)y=x/3+2
y=-2x-3
=> x/3+2=-2x-3
=>7/3x=-5
=>x=-15/7 et y= -15/7/3+2=-5/7+2=9/7
(-15/7,9/7)