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Question

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Answer 1

Step 1:

5)

The standard form of circle equation is

Find the radius.

Observe the graph,

The center and radius of the circle

The radius is

6)

Find the circle equation.

The center and radius of the circle

Substitute in

The equation of the circle is

Solution:

Answer 2

Step 1:

7)

Find the circle equation.

The center and radius of the circle

Substitute in

The equation of the circle is

8)

Find the circle equation.

The center and radius of the circle

Substitute in

The equation of the circle is

9)

Find the circle equation.

The center and radius of the circle

Substitute in

The equation of the circle is

Solution:

Answer 3

10)

Find the symmetry point of the  circle.

Observe the graph,

The center and radius point is

Since the point of symmetry for the circle is