Question

The midpoint of jk is point (-1,8). One endpoint is j(4, -15). Which equations can be solved to determine the coorinates of other endpoint, k? Select two options

Answer 1

(-6,31)

Explanation:

We have two points j,k whose midpoint is (-1,8).

Formula for calculating midpoint of two points (x1,y1) and (x2,y2) is

`((x1+x2)/(2),(y1+y2)/(2))`

So we already have midpoint as (-1,8).One of the point here is (4, -15) so let the other point be (l,k).

`((l+4)/(2),(k-15)/(2))= (-1,8)`

`l=-6\\ k=31`

Hence the other point is (-6,31).