EQUATION OF CIRCLE FROM GRAPH WORKSHEET

Write down the equations of each of the circles shown below :

Problem 1 :

Solution

Problem 2 :

Solution

Problem 3 :

Solution

Problem 4 :

Solution

Problem 5 :

Solution

Problem 6 :

Solution

Problem 7 :

Solution

Answer Key

1)  x2 + y2 = 4

2)  x2 + y2 - 2x = 0

3)  x2 + y2 – 6x – 6y + 9 = 0

4)  x2 + y2 + 2x + 2y + 1 = 0

5)  x2 + y2 - 6x + 2y - 15 = 0

6)  x2 + y2 - 12y = 0

7)  x2 + y2 – 8x - 10y + 25 = 0

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