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Mathematics 8 Online
OpenStudy (anonymous):

Look at the circle on the coordinate plane. Sophia wrote the equation of the circle in the center radius form as (x − p)2 + (y − q)2 = 25. The value of p + q is _____.

OpenStudy (anonymous):

I am just confused on the p + q part. Is it like x + y ?

OpenStudy (anonymous):

If it is, I think I can figure this out.

OpenStudy (anonymous):

go ahead

OpenStudy (anonymous):

http://www.purplemath.com/modules/circle.htm

OpenStudy (anonymous):

so it's 5?

OpenStudy (anonymous):

p+q=5?

OpenStudy (anonymous):

Yep... the coordinates are (3,2)

OpenStudy (anonymous):

that's the coordinate of the center

OpenStudy (anonymous):

go ahead

OpenStudy (anonymous):

so isn't it x + y?

OpenStudy (anonymous):

no. I guess your textbook/teacher is using p and q instead of h and k, that is the center of the circle

OpenStudy (anonymous):

5 sounds legit

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