Home > INT2 > Chapter 10 > Lesson 10.1.2 > Problem10-18

10-18.

Rewrite the equation $x^2 + y^2 - 8x + 6y + 9 = 0$ in graphing form and state the radius and center of the circle.

Refer to the Math Notes box from this lesson.

When completing the square, remember to add the new $c$ to both sides.

The radius is $4$ units.