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Mathematics 6 Online
OpenStudy (anonymous):

Find equations for Endpoints of a diameter at (3,-5) and (-7,2)

hartnn (hartnn):

you want to find equation of circle, right ?

hartnn (hartnn):

the endpoints of diameter are given, their MID-POINT is indeed the centre of circle. so, can you first find the centre using mid-point formula ?

hartnn (hartnn):

once you find the centre, you'll need radius Distance between end-points of diameter = length of the diameter! so, find the diameter using DISTANCE formula then, Radius r is just diameter/2

hartnn (hartnn):

tell me if you need the formula for MID-point or DISTANCE formula

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