Question

The midpoint of JK is point L at (–1, 8). One endpoint is J(4, –15). Which equations can be solved to determine the coordinates of the other endpoint, K? Check all that apply. = –1 = 4 –15 + y1 = 4 –15 + y1 = 16 = x1 = y1

Answer 1

The answer is (4+x1)/2=-1 and -15+y1=16 (a and c)

Explanation:

Answer 2

-2 = 4+x2

16 = -15 + y2

Explanation:

xm, ym = (x1+x2)/2 , (y1+y2)/2

xm = (x1+x2)/2

ym = (y1+y2)/2

substitute in what we know

-1 = (4+x2)/2

8 = (-15+y2)/2

multiply each equation by 2

-2 = 4+x2

16 = -15 + y2