SOLUTION: A circle with centre (-3, 1) passes through the point (3, 1) find it's equation

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Question 1200765: A circle with centre (-3, 1) passes through the point (3, 1) find it's equation
Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
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A circle with centre (-3, 1) passes through the point (3, 1) find it's equation
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 


The distance from (-3,1) to (3,1) is, obviously, 6 units along the horizontal line y= 1, connecting these points,

so the radius of the circle is 6 units.


It is just enough to write the equation of the circle in standard form


     +  = ,  or


     +  = 36.

Solved.


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Hey, you REGULARLY use INCORRECTLY the form " it's " instead of " its " in your posts.


At this forum, I know that the tutors teach you just several years (and practically every day) to use it correctly.

After several years of everyday teaching, it is just time to learn it, don't you ?



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