Equation of Circles

Which of the following is the correct equation for a circle given the radius r and the center point (h,k).

Tags

CCSS.HSG.GPE.A.1

Which equation represents a circle that has a radius of 6 and is centered at (-3, 5)?

Tags

CCSS.HSG.GPE.A.1

What is the equation of the circle? (Pay attention to the scaling on the graph)

Tags

CCSS.HSG.GPE.A.1

What is the equation of the circle?

Tags

CCSS.HSG.GPE.A.1

What is the radius of the circle?

Tags

CCSS.HSG.GPE.A.1

• center: (6, 9)

  radius: 4

• center: (-6, -9)

  radius: 2

• center: (6, 9)

  radius: 2

• center: (9, 6)

  radius: 4

Tags

CCSS.HSG.GPE.A.1

• center: (4, -1)

  radius: 5

• center: (4, -1)

  radius: 25

Tags

CCSS.HSG.GPE.A.1

• (9, 3)

• (1, 8)

• (8, 5)

• (1, -2)

Tags

CCSS.HSG.GPE.A.1

Tags

CCSS.HSG.GPE.A.1

• center: (2, -5)

  radius: 81

• center: (2, 5)

  radius: 9

• center: (2, -5)

  radius: 9

• center: (-2, -5)

  radius: 9

Tags

CCSS.HSG.GPE.A.1