Question

Точка C - середина отрезка AB. Найдите координаты точки B, если 1) A (3;-4), C(2;1)

Answer 1

Ответ )((()()()()()()()(((*&^^/$$#

Answer 2

Середина отрезка находится по формуле 

x = (x1+x2)/2 
y = (y1+y2)/2

Answer 3

To find the coordinates of point B, knowing that point C is the midpoint of segment AB, we can use the midpoint formula. The midpoint formula states that the coordinates of the midpoint (Cx, Cy) are the average of the coordinates of the endpoints (Ax, Ay) and (Bx, By).

Given: Point A: (3, -4) Point C: (2, 1)

Let's denote the coordinates of point B as (Bx, By).

Using the midpoint formula, we have:

Cx = (Ax + Bx) / 2 Cy = (Ay + By) / 2

Plugging in the known values:

2 = (3 + Bx) / 2 1 = (-4 + By) / 2

Now, we can solve these equations to find the values of Bx and By.

2 = (3 + Bx) / 2 4 = 3 + Bx Bx = 4 - 3 Bx = 1

1 = (-4 + By) / 2 2 = -4 + By By = 2 + 4 By = 6

Therefore, the coordinates of point B are (1, 6).