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Equations of Circles

Equations of Circles. 12-5. Equation of a Circle. What is the standard equation of the circle with a center at (5, -2) and a radius of 7?. What is the standard equation of each circle?. Center: (3, 5) Radius: 6 Center (-2, -1) Radius . 3. What is the standard equation of each circle?.

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Equations of Circles

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  1. Equations of Circles 12-5

  2. Equation of a Circle

  3. What is the standard equation of the circle with a center at (5, -2) and a radius of 7?

  4. What is the standard equation of each circle? Center: (3, 5) Radius: 6 Center (-2, -1) Radius

  5. 3. What is the standard equation of each circle?

  6. What is the standard equation of the circle with center (1, -3) that passes through the point (2,2)? Step1: Distance formula to find the radius. Step 2: Use the radius and center to write the equation + = + = 26

  7. 4. What is the standard equation of the circle with center (4,3) that passes through the point (-1, 1)?

  8. When you make a call on a cell phone, a tower receives and transmits the call. A way to monitor the range of a cell tower system is to use the equations of circles. Suppose the equation represents the position and the transmission range of a cell tower. What is the graph that shows the position and range? Position is the center: (7, -2) Range is the radius: = 8

  9. 5. What is the center and radius of the circle with the equation . Graph the circle.

  10. Answers for Questions 1-5 • 1. + = • 2. + = 2 • 3. + = 4 • 4. + = • 5.

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