The segment bisector of line JK would be L since it passes through M How to find JM is that you would have to solve 3x+15=8x+25 to get x and once you find x you just plug it into the equation for JM, 3x+15 3x+15=8x+25 (subtract 8x on both sides) -5x+15=25 (subtract 15 on both sides) -5x=10 (Divide on both sides) x=-2 Plug that in: 3(-2)+15 -6+15 JM=9