Question

if the points A (- 2, - 1 ), B (1,0), C(x,3) D (1,y) form a parallelogram . find the value of (x,y)​

Answer 1

Answer:

x = 4

y = 2

Step-by-step explanation:

Change in x-coordinates from A to B is the same going from D to C.  So:

1 - (-2) = x - 1   =>   1 + 2 = x - 1   =>   x = 4

Change in y-coordinates from A to B is the same going from D to C.  So:

0 - (-1) = 3 - y  =>  1 = 3 - y   =>   y = 3 - 1  =>  y = 2