 # Key Copy of Geometry Ch 9.7 2020.pdf - Name Date Geometry...

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Name_______________________________________Date_____________________ Geometry Ch 9.7Equations of CirclesDo Now: complete the squareTHE VIDEO USES (our textbook uses (h, k)?𝑐, ?𝑐)Write the equation of each circle.1.center at (–2, 3), radius 5(𝑋 + 2)2+ (? − 3)2=252.center at origin, diameter 4?2+?2=43.center at (-2, 4), passes through (-6, 7)use distance formula to find radius r = 5(? + 2)2+ (? − 4)2=254.(? − 1)2+ (? − 3)2=9For each circle with the given equation, state the coordinates of the center and the measure of the radius.Then graph the equation.+= 95. (?− 2)2(? − 1)2(2, 1)r = 36.x2+ y2– 8x + 2y = -8Write the equation in standard form by completing the square.State the coordinates of the center and the measure of the radius.Then graph the equation.(? − 4)2

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