Writing Equations of a Circle

Write the equation of the circle graphed above.

• (x-2)²+(y+2)²=9

• (x+2)²+(y-2)²=9

• (x-2)²+(y+2)²=3

• (x+2)²+(y-2)²=3

What is the equation of this circle?

• (x + 3)² + (y - 1)² = 9
• (x - 3)² + (y + 1)² = 9
• (x - 3)² + (y + 1)² = 3
• (x + 3)² + (y - 1)² = 3

Which graph corresponds to 
(x)²+ (y-6)²=9

• A
• B
• C
• D

 $What\ is\ the\ radius\ of\ the\ circle\ in\ the\ graph\ ?$  

• 8

• 4

• 2

• 16

 $Match\ the\ graph\ with\ the\ it's\ equation\$  

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• 
• 
• 

 $Match\ the\ graph\ with\ it's\ equation$  

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• 
• 

 $Match\ the\ graph\ with\ it's\ equation$  

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• 
• 

 $What\ is\ the\ equation\ of\ the\ circle\ ?$  

•  $\left(x-2\right)^2\ +\left(y-1\right)^2\ =\ 10$  

•  $\left(x+2\right)^2\ +\left(y-1\right)^2\ =\ 5\$  

•  $\left(x-2\right)^2\ +\ \left(y+1\right)^2\ =\ 25$  

•  $\left(x+2\right)^2\ +\ \left(y-1\right)^2\ =\ 25$  

 $Write\ the\ equation\ of\ the\ circle\ that\ has\ a\ center\ at\ \left(5,3\right)\ and\ a\ radius\ of\ 6$  

•  $\left(x-5\right)^2\ +\ \left(x-3\right)^2\ =\ 36$  

•  $\left(x-5\right)^2\ +\ \left(y-3\right)^2\ =\ 6$  

•  $\left(x+5\right)^2\ +\ \left(x-3\right)^2\ =\ 12$  

•  $\left(x+5\right)^2\ +\left(x+3\right)^2\ =\ 36$  

What is the center of the circle with equation x² + y² = 1?

• (1, 1)
• (0, 0)
• not enough information