please answer questions 7-10 and show all work

Iside In Exercises 7 and 8, tell whether the orthocenter is inside, on, or outside the e triangletriangle. Then find the coordinates of the orthocenter. 7. J (1, 3 ) , K ( - 3, 1 ) , 2(0, 0) 8. D(-3, -2), E(-2, -2), F(1, 2) Co, 0 ) 9. To transport a triangular table, you remove the legs. You secure the glass top to the frame by looping a string from a hole in each vertex around the opposite side, then pulling it tight and tying it. At what point of concurrency do the three strings intersect? Explain your reasoning. 10. Your friend claims that it is impossible for the centroid and the orthocenter of a triangle to be the same point. Is your friend correct? Explain your reasoning