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What is the center of the circle with the equation (x-1)2 + (y-3)2= 9?

User Olu Udeh
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The values of the numbers in parentheses give the coordinates of the center

x - 1 means that x coordinate is 1 and y - 3 gives the y coordinate which is 3

Center is at ( 1, 3) answer
User Kavitha Reddy
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Standard form equation of the circle:


(x-a)^2+(y-b)^2=r^2


\text{a and b are the x and y coordinates of the center of the circle; r is a length of a radius}

We have:

(x-1)^2+(y-3)^2=9\\\\\text{therefore coordinates of the center of the circle are (1; 3) and a radius is equal 3}



User RodolfoAP
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