Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.9 - Distance and Midpoint Formulas; Circles - Exercise Set - Page 281: 79

Answer

See explanations.

Work Step by Step

Start from the general form, move the constant term to the right side, form perfect squares for the $x$ and $y$ variables by adding corresponding constants on both sides of the equation, and finally obtain the standard form with perfect squares $(x-h)^2+(y-k)^2$ on the left side and a constant $r^2$ on the right side.
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