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

Answer:

(-6,31)

Step-by-step 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

$(\frac{x1+x2}{2},\frac{y1+y2}{2})$

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

$(\frac{l+4}{2},\frac{k-15}{2})= (-1,8)$

$l=-6\\ k=31$

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