The Circle. Examples (1) – (5) Determine the center and radius of the circle having the given equation. Identify four points of the circle.

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Presentation transcript:

The Circle

Examples (1) – (5) Determine the center and radius of the circle having the given equation. Identify four points of the circle.

Solutions

EXAMPLE (6) Find the equation of the circle with radius 4 and center at (3, -2)

Solution

EXAMPLE (7) Find the radius and center of each of the following circles: 1.. 9x 2 + 9y 2 = x 2 + 9y 2 = x 2 + 9y 2 = (x+2) 2 + 3y 2 = x 2 + 2(y-1) 2 = (x-5) 2 + 2(y+1) 2 = 4