Question

Write the equation of the circle in general form.

Answer 1

`x^(2) +y^(2) =9`

Explanation:

The middle of the circle is at 4, -2, and r is 3

so

x + 4 + y + 2 = 3

combine like terms

x + y + 6 = 3

x + y = -3

square all the numbers

`x^(2) +y^(2) =9`

easy!