Question

points (- 2 ,- 1), (1, 0), (x,3)and( 1,y) are the vertices of a parallelogram find the value of x and y​

Answer 1

mid points of //grm are equal

So Mid point of first two points =

a=-2+1/2=-1/2

b=-1+0/2=-1/2

now,

x+1/2=-1/2

x+1=-1

x=0

then,

y+3/2=-1/2

y+3=-1

y=-2