M is the midpoint of. Find the coordinates of B given A(4,-2) and M(1,3?

Question

M is the midpoint of. Find the coordinates of B given A(4,-2) and M(1,3?

Answer 1

x-value of A is 4.

x-value of M is 1.

So it's decreasing by 3.

Therefore, x-value of B is 1 - 3 = -2.

y-value of A is -2.

y-value of M is 3.

So it's increasing by 5.

Therefore, y-value of B is 3 + 5 = 8.

Thus, coordinates of B are (-2, 8).

Answer 2

This should be in mathematics, not geography. ( -2,8) is the right answer

Answer 3

(-2,8) is the correct answer but how did you get it? You ask.

(xA + xB)/2 = xM

(yA + yB)/2 = yM

By following the logic (in the answer) above you can deduce this answer.

Answer 4

Use the formula m = (x1+x2/2   ,    y1+y2/2)

(4 + 1/2    ,     -2 + 3/2)

(5/2)  ,   (1/2)

Your answer is 2.5, 0.5