anonymous
  • anonymous
given the center (h,k) and radius r=3, write an equation for the circle in standard form a) (x+5)^2+y^2=9 b) (x-5)^2+y^2=9 c) (x-5)^2+y^2=3
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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SolomonZelman
  • SolomonZelman
The equation of a circle is: \(\large\color{black}{ \displaystyle (x-{\rm \color{red}{h}} )^2+ (y-{\rm \color{blue}{k}} )^2 = {\rm \color{green}{r}}^2 }\) Where 1) \(\large\color{black}{ \displaystyle({\rm \color{red}{h}} ,~{\rm \color{blue}{k}} )}\) is the \(\normalsize\color{red}{ \bf c\color{blue}{e}n\color{blue}{t}e\color{blue}{r} }\) of the circle. 2) \(\large\color{black}{ \displaystyle {\rm \color{green}{r}} }\) is the \(\normalsize\color{green}{ \bf radius }\) of the circle.
SolomonZelman
  • SolomonZelman
this is the general form, and you don't even need to change the (h,k). All you need to do is to substitute 3 for \(\rm \color{green}{r}\).
SolomonZelman
  • SolomonZelman
you have some typos in a question apparently....

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anonymous
  • anonymous
its B ? i forgot to put that (h,k)=(5,0)
SolomonZelman
  • SolomonZelman
ok, h=5 k=0 r=3 then, yes, option B is correct. (x-5)²+y²=9
SolomonZelman
  • SolomonZelman
questions?
anonymous
  • anonymous
no thank you !
SolomonZelman
  • SolomonZelman
Alright! You are welcome; have a good luck!

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