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Center ( Radius: , ) 1. What is the center and radius for the circle above? Radius: x2 + y2 = 3 3 2. What is the equation for the circle? x2 + y2 = 9 2 -2 4 -4 6 -6 2 -2 4 -4 6 -6 8 -8 10 -10 Center ( Radius: 3. What is the center and radius for the equation graphed here? , ) 2 -2 4 -4 6 -6 2 -2 4 -4 6 -6 8 -8 10 -10 (x-5)2 + (y-4)2 = 9 4. What is the equation for the circle ? (x+5)2 + (y+4)2 = 9 5. Given the center of a circle is (4, 3) and the point (-2, 9) is on the circle, what is the equation of the circle? (x + 4)2 + (y + 3)2 = 72 (x - 4)2 + (y - 3)2 = √72 (x + 4)2 + (y - 3)2 = 72 (x + 4)2 + (y - 3)2 = √72 6. Given the center of a circle is (-5, 2) and passesthrough the point (-2, -2), what is the equation of the circle? (x + 5)2 + (y - 2)2 = 5 (x + 5)2 + (y + 2)2 = 25 (x + 5)2 + (y - 2)2 = 25 (x + 5)2 + (y + 2)2 = 5 7. Given the center of a circle is (-6, -2) and the a radius of 4, what is the equation of the circle? (x + 6)2 + (y + 2)2 = 16 (x + 6)2 + (y + 2)2 = 4 (x - 6)2 + (y - 2)2 = 16 8. Determine the center and radius of the circle whose equation is *Make sure you include the - sign if it is needed. Center ( , ) Radius (x+2)2+(y-5)2=16 9. Determine the center and radius of the circle whose equationis *Make sure you include the - sign if it is needed. Center ( , ) Radius (x+7)2+(y+5)2=36 10. Determine the center and radius of the circle whose equationis *Make sure you include the - sign if it is needed. Center ( , ) Radius x2+(y-2)2=49 |