someone pls answer this

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

How do you use the elimination method for this question? explain, because i really want to understand!

The owners of four companies competing for a contract are shown in the table below. if a report is released that advocates company b, which of the people having funded the report should result in the most skepticism? company owner of company company a jake adams company b company c company d debby smith henry rose rhonda baker o a. jake adams o b. rhonda baker o c. debby smith o d. henry rose