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Murljashka [212]
3 years ago
5

Find an equation of the circle having the given center and radius. Center ( - 1, 1), radius 7

Mathematics
2 answers:
Alinara [238K]3 years ago
8 0

Answer:

(x+1)^2+(y-1)^2=49

Step-by-step explanation:

The standard equation of a circle is

(x-h)^2+(y-k)^2=r^2

where the center is (h,k) and r is the radius

so h=-1 and k=1 in this case

so then (x- -1)^2+(y-1)^2=7^2

(x+1)^2+(y-1)^2=49

suter [353]3 years ago
7 0

Answer:

(x+1)^2 + (y+1)^2 = 49

Step-by-step explanation:

We can write the equation of a circle as

(x-h)^2 + (y-k)^2 = r^2

where (h,k) is the center and r is the radius

(x- -1)^2 + (y- -1)^2 = 7^2

Simplifying

(x+1)^2 + (y+1)^2 = 49

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