Answer:
B(-1, 0)
Step-by-step explanation:
coordinates of midpoint p(x,y) are calculated as
[tex]x= \frac{x_1+x_2}{2}[/tex] ---------- (1)
[tex]y= \frac{y_1+ y_2}{2}[/tex] -----------(2)
Here [tex](x_1, y_1) = (7, 8)[/tex] and [tex](x_2, y_2) \ is \ unkwon[/tex]
Using equation (1)
[tex]3=\frac{7+x_2}{2} \\x_2=-1[/tex]
Using equation (2)
[tex]4=\frac{8+y_2}{2} \\y_2=0[/tex]
