Question

If the midpoint of the line segment joining the points A(3,4) and B(k,6) is P(x,y) and x+y-10=0 find k.

Answer 1

mid point will be
(3+k/2, 4+6/2)
(3+k/2,5)
it satisfies eqn
((3+k)/2)+5-10=0
from here u will get k