The equation of a circle can be written in the format (x – a)

1. Find the equation of a circle with radius 5 and center (-3,3).

2. Find the equation of a circle with radius 8 and center (0,0).

^{2} + y^{2} = 64

^{2} + y^{2} = 64

^{2} + y^{2} = 8

3. Find the equation of a circle with radius 7 and center (12,6).

^{2} + (y - 6)^{2} = 49

^{2} + (y + 6)^{2} = 49

^{2} + (y - 6)^{2} = 7

^{2} + (y + 6)^{2} = 7

4-5. Find the center and radius of circle of equation:

center:

radius:

6. Find the intersection points of the two circles below, for any real number *a*.

*Press the Submit button to see the results.*

Copyright © Free Test Online, 2019