Question

O ponto médio do segmento AB onde A(5; -2) e B(1;-8) é: (A) (2; 3) (B) (4; 6) (C) (6; -10) (D) (3; -5) (E) (3; -7)

Answer 1

Resposta:

Mx = (Ax + Bx)/2 = (5 + 1)/2 = 3

My = (Ay + By)/2 = (-2 - 8)/2 = -5

(D) (3, -5)

Answer 2

Resposta:

Letra D

Explicação passo a passo:

$Seja~~M(x_M,y_M),~~o~~ponto~~m\acute edio.\\\\x_M=\frac{x_A+x_B}{2} \\\\x_M=\frac{5+1}{2}\\\\x_M =\frac{6}{2}\\\\x_M=3\\\\y_M=\frac{y_A+y_B}{2}\\\\y_M=\frac{-2-8}{2}\\\\y_M=\frac{-10}{2} \\\\y_M=-5\\\\M(3,-5)$