A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
Please help...I don't know what to do or even where to start.
Given the equation (x+3)^2+y^2=16 (a) find the center and the radius (b) graph (c) find the intercepts, if any.
anonymous
 4 years ago
Please help...I don't know what to do or even where to start. Given the equation (x+3)^2+y^2=16 (a) find the center and the radius (b) graph (c) find the intercepts, if any.

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0x=3 and y=0 center radius =4

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.0the general equation of a circle is:\[(xa)^2+(yb)^2=r^2\]where (a,b) is the coordinate of the center of the circle, and r is its radius.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1327549404656:dw

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.0so if you rewrite your equation:\[(x+3)^2+y^2=16\]in the form you get:\[(x(3))^2+(y0)^2=4^2\]from which you can see the center must be at (3, 0) and the radius must be 4 as @cinar said above.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I am sorry I made a mistake when x=0 y=+sqrt7

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1327549640807:dw

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.0then, to find the intercepts you would do this: 1) xintercept is when y=0, therefore:\[(x+3)^2+0^2=16\]\[x+3=\sqrt{16}=\pm4\]\[x=1 \text{ or } 7\] 2) yintercept is when x=0, therefore:\[(0+3)^2+y^2=16\]\[9+y^2=16\]\[y^2=7\]\[y=\pm\sqrt{7}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0this one is better than I drew http://www.wolframalpha.com/input/?i=plot+%28x%2B3%29^2%2By^2%3D16

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so if i have to go in and graph and i have to type in the #s into a box that looks like this 1 what do i type where Grid axis from to xaxis yaxis Interval xaxis y axis

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0or what is the difference between the axis and the interval

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0x axis is 1 and 7 interval is 7<=x<=1 y axis is sqrt7 and sqrt7 but interval is 4<=y<=4 I dont know what grid is
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.