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Diana98
a fost răspuns

SCRIETI ecuatia dreptei AB daca:

A(1,2), B(-5,7)

Răspuns :

Iuly10
y-ya=(yb-ya)/(xb-xa)*(x-xa)
y-2=7-2/-5-1 * (x-1)
y-2=-5/6x +5/6
y=-5/6x+5/6+2
y=-5/6x+17/6
Alesyo
[tex] \frac{x-x1}{x2-x1}= \frac{y-y1}{y2-y1} [/tex]

[tex] \frac{x-1}{-5-1}= \frac{y-2}{7-2} [/tex]

[tex] \frac{x-1}{-6}= \frac{y-2}{5} 5(x-1)=-6(y-2) 5x-5=-6y+12 5x-5+6y-12=0 5x+6y-17=0 [/tex]

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