How do you write an equation of a circle with center (-2, 1), radius = 4?

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How do you write the general form given a circle that passes through the given points. P(-2, 0),...
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Answer 1 · 2018-03-03T14:29:10

#(x+2)^2+(y-1)^2=16#

The standard equation of a circle with center #(a,b)# and radius #r# is given by

#(x-a)^2+(y-b)^2=r^2#

Then, given your problem,

#[x-(-2)]^2+(y-1)^2=4^2#