Răspuns:
M(0;4); D(2;-3); E(-2;5); Q(0;-4)
Explicație pas cu pas:
a)
[tex]x = \frac{1 + ( - 1)}{2} = \frac{1 - 1}{2} = 0 \\ y = \frac{6 + 2}{2} = \frac{8}{2} = 4 \\ M(0;4)[/tex]
b)
[tex]x = 2 \\ y = - 3 \\ D(2;-3)[/tex]
c)
[tex]MB = \sqrt{(0 - 2)^{2} + {(4 - 3)}^{2}} = \sqrt{4 + 1} = \sqrt{5} [/tex]
[tex]ME = MB = \sqrt{5}[/tex]
[tex] x = - (2 - 0) = - 2 \\ y = 4 + (4 - 3) = 4 + 1 = 5\\ E(-2;5)[/tex]
d)
[tex]x = 0 \\ y = - 4 \\ Q(0; - 4)[/tex]
