Question

If (3,3),(6,y),(x,7) and (5,6) are the vertices of a parallelogram taken in order , find value of x and y

Answer 1

divide the parallelogram into two triangles (6,y) and
(X,7) should be on the opposite vertices .and now using the formula
$1 \div 2(x1(y - y3) + x2(y3 - y1) + x 3(y1 - y2))$ mark me as brain list plsss