Homework – Circles
Name ______________
1.
The point (1, -2) is on a circle whose center is at (-3, -5). Write the
standard form of the equation of the circle. Hint: Find radius first.
2.
Convert the circle equation x 2 + y 2 + 10 x - 4 y + 21 = 0 to standard form and
identify the center and radius.
3.
Sketch the graph of ( x + 2) 2 + ( y − 1) 2 = 4 and convert the equation from
standard from to general form.