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anonymous
 one year ago
Help please???
What is the equation of a circle with a center at (0, 9) and a radius of 9?
anonymous
 one year ago
Help please??? What is the equation of a circle with a center at (0, 9) and a radius of 9?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0(x0)² + (y9)² = 9²

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then you need to simplify

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2Similar Example: Let's say we ask "what is the equation of the circle with radius 4 and center (2,3)?" Center: \(\large ({\color{red}{h}},{\color{blue}{k}}) = ({\color{red}{2}},{\color{blue}{3}})\) Radius: \(\large r = {\color{green}{4}}\) Plug all this into \[\Large (x{\color{red}{h}})^2+(y{\color{blue}{k}})^2 = {\color{green}{r}}^2\] to get \[\Large (x{\color{red}{h}})^2+(y{\color{blue}{k}})^2 = {\color{green}{r}}^2\] \[\Large (x({\color{red}{2}}))^2+(y{\color{blue}{3}})^2 = {\color{green}{4}}^2\] \[\Large (x+2)^2+(y3)^2 = 16\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay so the answer is x^2+(y9)^2=9^2?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2you can simplify the 9^2 part

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay so x^2+(y9)^2=81?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Good job do you understand though?
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