Question

if M is the midpoint of AB, find the co-ordinator of a/ A if the co-ordinator of M and B are M(2,8) and B(-4,19)​

Answer 1

M (2,8)= (x1y1)

B(-4,19)= (x2y2)

here,

midpoint = (x1+x2/2) (y1+y2/2)

= ( 2+ (-4)/2) (8 +19/2)

= (-2/2) (27/2)

= -1, 13.5

Explanation:

by using midpoint formula

Answer 2

The coordinate of A would be (8, -3)