Question

já respondi 1,2 e 5.
falta 3 e 4 me ajuda please

Answer 1

Explicação passo-a-passo:

3) $A(4,3)$ e $B(1,7)$

O ponto médio $M$ tem coordenadas:

$x_M=\dfrac{x_A+x_B}{2}$

$x_M=\dfrac{4+1}{2}=\dfrac{5}{2}$

$y_M=\dfrac{y_A+y_B}{2}$

$y_M=\dfrac{3+7}{2}=\dfrac{10}{2}=5$

Logo, $M(\frac{5}{2},5)$

4) $A(2,-1)$ e $B(-4,5)$

$x_M=\dfrac{2-4}{2}=\dfrac{-2}{2}=-1$

$y_M=\dfrac{-1+5}{2}=\dfrac{4}{2}=2$

Logo, $M(-1,2)$