Question

se dau punctele A (1;1) ; B (2;3); C(-1;-2) aflati ecuatie dreptei (AB)

Answer 1

Salut,

Ecuaţia dreptei este:

$\dfrac{x-x_A}{x_B-x_A}=\dfrac{y-y_A}{y_B-y_A},\;adic\breve{a}:\;\dfrac{x-1}{2-1}=\dfrac{y-1}{3-1},\\\\sau\;2x-2=y-1\Rightarrow 2x-y-1=0$

Green eyes.