Question

A circle has a diameter with endpoints of (-2, 8) and (6, 4). What is the center of the circle?

Answer 1

find the midpoint, which you do by taking the average in each coordinate
i.e. add and divide by 2

Answer 2

would you add -2 and 8 together?

Answer 3

Yes. You would use, (x2-x1)/2, and same for the y points. just like he said

Answer 4

According to the numbers given, the diameter is roughly 8.9 therefore the midpoint or center would be approximately 4.45.