Find the coordinates of the vertex.
vertex:(?,?)​

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39

With alll of except for the 2 that i did already