### Home > INT3 > Chapter 5 > Lesson 5.2.1 > Problem 5-61

5-61.

Write the equation in graphing form of each circle described below.

A circle with radius

centered at the point . A circle with center

and radius . Refer to the hint in part (a).

A circle with equation

. (Hint: Complete the square for bothand.)Factor the expressions in parentheses and simplify.