Question

The equation of a circle is (x + 6)2 + (y + 2)2 = 16. The point (-6, 2) is on the circle.

What is the equation of the line that is tangent to the circle at (-6, 2)?

Answer 1

First look at it :
(a+b)^2=a^2+2ab + b^2

Answer 2

is it y=2 ?

Answer 3

or negative?

Answer 4

Can you show your way ?