Respuesta :

Answer

x=3.5 y=2   (3.5,2)

Step-by-step explanation

You add the x coordinates and divide it by 2, 8-1/2=3.5. Then you would do the same for the y coordinates 1+3/2=2. The midpoint would be (3.5,2)

Answer:

-81

Step-by-step explanation:

(81, 0)  (-1, 3)

= 81 (- 1 ) + 0 · 3

= -81