Question

Determine o ponto P do segmento pQ sabendo que Q(3;8) e o ponto médio do segmento e M(-2;1)?

Answer 1

Olá !

Isso é fácil , veja como se faz :

$Xm =\dfrac{Xp + Xq}{2} \\\\\\ -2 =\dfrac{Xp+ 3}{2} \\\\\\ Xp + 3 = -4 \\\\\\ Xp = -4 - 3 \\\\\\ Xp = -7$

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$Ym =\dfrac{Yp + Yq}{2} \\\\\\ 1 =\dfrac{Yp + 8}{2} \\\\\\ Yp + 8 = 2 \\\\\\ Yp = 2 - 8 \\\\\\ Yp = -6$


Resposta :

P(-7,-6}