Question

Find an equation of the circle that has center C(2, −2) and is tangent to the line y = 2. (Give your answer in standard notation.)

Answer 1

I got (x-2)^2 + (y+2)^2 = 4

Answer 2

The radius of the circle will be 4 if the center is at (2,-2) and y = +2 is a tangent.
So the right hand side should be 4^2 in your equation.

Answer 3

Thank you so much!

Answer 4

you are welcome.

Answer 5

Hello,Nin.