Equations of circles

(h,k) (-3, 7) center r ( ( ( +3) ^{2}+( -7)^{2} =(x+3) ^{2} +(y-7)^{2} =The CENTER, represented by point (h,K) is where the LEFT side of the equation is equal to zero. Example below: (0) ^{2} + (0)^{2} =-3 Horizontal change x-h ) ) 2 2 + + ( ( Vertical change y-k 7 ) ) 2 2 = = radius ^{2}r ^{2}r ^{2}r ^{2}r ^{2}What x and y values make the left side of the equation equal zero? What is the center of the circle? What is the radius of the circle? r ^{2}(x+2) ^{2} +(y-5)^{2} =16=16, use square roots to find r. ( , ) What x and y values make the left side of the equation equal zero? What is the center of the circle? What is the radius of the circle? r ^{2}(x+7) ^{2} +(y+5)^{2} =16=16, use square roots to find r. ( , ) What x and y values make the left side of the equation equal zero? What is the center of the circle? What is the radius of the circle? r ^{2}(x+12) ^{2} +(y+35)^{2} =16=16, use square roots to find r. ( , ) What x and y values make the left side of the equation equal zero? What is the center of the circle? What is the radius of the circle? r ^{2}(x-6) ^{2} +(y-8)^{2} =25=25, use square roots to find r. ( , ) What x and y values make the left side of the equation equal zero? What is the center of the circle? What is the radius of the circle? r ^{2}(x+2) ^{2} +(y-5)^{2} =36=36, use square roots to find r. ( , ) What x and y values make the left side of the equation equal zero? What is the center of the circle? What is the radius of the circle? r ^{2}x ^{2} +(y-22)^{2} =9=9, use square roots to find r. ( , ) What x and y values make the left side of the equation equal zero? What is the center of the circle? What is the radius of the circle? r ^{2}x ^{2} +y^{2} =121=16, use square roots to find r. ( , ) What x and y values make the left side of the equation equal zero? What is the center of the circle? What is the radius of the circle? r ^{2}(x+13) ^{2} +(y-1)^{2} =64=16, use square roots to find r. ( , ) What is the radius of the circle? What x and y values make the left side of the equation equal zero? r ^{2}What is the center of the circle? (x+13) ^{2} +(y-1)^{2} ==25/9, find the square roots of numerator and denominator SEPARATELY to find r. ( , 25 ) 9 What is the radius of the circle? What x and y values make the left side of the equation equal zero? r ^{2}What is the center of the circle? (x+3) ^{2} +(y)^{2} ==25/9, find the square roots of numerator and denominator SEPARATELY to find r. ( , 49 81 ) |

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