Question

Find an equation of the circle that satisfies the given conditions: Ends of the diameter are (  1, 3 ) and ( 7,  5 )

Answer 1

Start by locating the midpoint of that diameter, that would be the location of the center.

Answer 2

Then calculate the distance from this midpoint to one of the points given, that would be the radius. You now have the info to write the equation of that circle. Good luck.

Answer 3

For the first step use the "midpoint" formula. google line midpoint.
For the second step use the "distance formula" if you don't have it memorized google it.