Circle Equation (Standard Form)

What is the equation of the circle, with center (7,-3) and radius 8 units?

• (x - 7)² + (y + 3)² = 8
• (x - 7)² + (y + 3)² = 64
• (x + 7)² + (y - 3)² = 8
• (x + 7)² + (y - 3)² = 64

What is the equation of the circle, with center (-4,5) and radius 6 units?

• (x - 4)² + (y + 5)² = 6
• (x - 4)² + (y + 5)² = 36
• (x + 4)² + (y - 5)² = 6
• (x + 4)² + (y - 5)² = 36

What is the equation of the circle, with center (-6,-9) and radius 7 units?

• (x + 6)² + (y + 9)² = 49
• (x + 6)² + (y + 9)² = 7
• (x - 6)² + (y - 9)² = 49
• (x - 6)² + (y - 9)² = 7

What is the equation of the circle, with center (-2,-7) and radius 3 units?

• (x + 2)² + (y + 7)² = 3
• (x - 2)² + (y - 7)² = 9
• (x + 2)² + (y + 7)² = 9
• (x - 2)² + (y - 7)² = 3

What is the equation of the circle, with center (3,8) and radius 4 units?

• (x - 3)² + (y - 8)² = 4
• (x - 3)² + (y - 8)² = 16
• (x + 3)² + (y + 8)² = 16
• (x + 3)² + (y + 8)² = 4

What is the equation of the circle, with center (4,2) and radius 5 units?

• (x + 4)² + (y + 2)² = 25
• (x + 4)² + (y + 2)² = 5
• (x - 4)² + (y - 2)² = 5
• (x - 4)² + (y - 2)² = 25

What is the equation of the circle, with center (a,b) and radius r units?

• (x - a)² + (y - b)² = r² 
• (x + a)² + (y + b)² = r
• (x - a)² + (y - b)² = r
• (x + a)² + (y + b)² = r² 

What is the coordinates of the center and the radius of the circle with equation:
(x + 7)² + (y - 6)² = 64 ?

• Center (7,-6)
  Radius = 8 units
• Center (-7,6)
  Radius = 64 units
• Center (-7,6)
  Radius = 8 units
• Center (7,-6)
  Radius = 64 units

What is the coordinates of the center and the radius of the circle with equation:
(x - 5)² + (y + 3)² = 36 ?

• Center (5,-3)
  Radius = 6 units
• Center (-5,3)
  Radius = 6 units
• Center (-5,3)
  Radius = 36 units
• Centrer (5,-3)
  Radius = 36 units

What is the coordinates of the center and the radius of the circle with equation:
(x + 2)² + (y + 5)² = 16 ?

• Center  (2,5)
  Radius = 16 units
• Center (2,5)
  Radius = 4 units
• Center (-2,-5)
  r = 16 units
• Center (-2,-5)
  Radius = 4 units