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NemiM [27]
3 years ago
14

Write the standard equation of a circle that passes through (−4, 0) with center (−1, −4).

Mathematics
1 answer:
Minchanka [31]3 years ago
4 0
The standard form for a circle is (x-h) ^{2}+(y-k) ^{2} = r^{2}.  We have our h and k, and we also have x and y.  So let's fill in accordingly and solve for the radius squared term. (-4-(-1)) ^{2} +(0-(-4)) ^{2}= r^{2}.  Simplifying we get 9+16= r^{2} or 25.  Now let's rewrite the equation with the radius term: (x+1) ^{2}+(y+4) ^{2}=25
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