(h, k) is the centerr is the radius
(x, y) is any point on the circle
Example 1: Write the standard form of the equation of the circle with center (5, 7) and r = 4.
*Plug in 5 for h, 7 for k, and 4 for r
*4 squared is 16
*Standard form of circle with center (5, 7) and radius 4
Putting it into standard form we get:
During solving this question,steps we should do: -is identifying the cordinate of circle and the radius of circle from the question given or from the figure given
-next note down all the information
- Sketch diagram of the circle with all information to give you clear image as shown above.
-finally put all informaton into the equation.
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