Question

What is the center of the circle with equation (x - 1)² + (y + 5)² = 9
Question 18 options:

a) (1,5)

b) (-1,-5)

c) (-1,5)

d) (1,-5)

Answer 1

Equation of circle with center (h, k) and radius r.

\( (x - h)^2 + (x - k)^2 = r^2 \)

\( (x - 1)^2 + (y + 5)^2 = 9 \)

\( (x - \color{red}{1})^2 + (y - (\color{red}{-5}))^2 = \color{red}{3}^2 \)

Circle with center at (1, -5) and radius 3.