College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 1, Equations and Graphs - Section 1.2 - Graphs of Equations in Two Variables; Circles - 1.2 Exercises: 67

Answer

center: $(0, 0)$; radius = 3 units Refer to the image below for the graph.
1509545475

Work Step by Step

RECALL: The circle $x^2+y^2=r^2$ has its center at $(0, 0)$ and a radius of $r$ units. The given circle can be written as $x^2+y^2=3^2$. This equation is in the same form as the one in the recall part above so its center is at $(0, 0)$ and its radius is $3$. Plot the points that are: 3 units above the center: $(0, 3)$ 3 units below the center: $(0, -3)$ 3 units to the left of the center: $(-3, 0)$ 3 units to the right of the center: $(3, 0)$ Then, connect the points using a curve to form a circle. (refer to the attached image in the answer part above)
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.