Question

9.
The mid-point of the line-segment AB is P(0, 4). If the coordinates of B are
(-2, 3) then the co-ordinates of A are
(a) (2,5)
(b) (-2,-5) (c) (2, 9) (d) (-2, 11)​

Answer 1

Answer:

a. 2,5

Step-by-step explanation:

applying formula

x1+x2/2and ye+y2/2

0=x1-2/2. =×=2

4=y2+3/2. =y=5

Answer 2

Answer:

(a)

Step-by-step explanation:

midpoint = $x = \frac{x1 + x2}{2}, y = \frac{y1+y2}{2}$

so,$0= \frac{-2 + x2}{2}$

so x2 = 2

and 4 = $\frac{3 + y1}{2}$

so y2 = 8

so the coordinate will be (2, 5)