Answer:
B
Step-by-step explanation:
Substitute the values in for x and y and you will see B is correct.
Answer: Normally C/C++
Step-by-step explanation:
Subtract
from both sides to get



(-3,7)(9,5)
midpoint formula : (x1 + x2)/2 , (y1 + y1)/2
(-3 + 9)/2 , (7 + 5)/2 = (6/2, 12/2) = (3,6) <==