which of the following equations correctly represents a circle centered at the origin with a radius of 10?

2 ⤊

which of the following equations correctly represents a circle centered at the origin with a radius of 10?

A. x2 + y2 = 100
B. x2 + y2 = 1002
C. x2 + y2 = 10
D. (x - 10)2 + (y - 10)2 = 100

2007-04-10 02:05:08 · 2 answers · asked by bekah_2009 2 in Science & Mathematics ➔ Mathematics

2 answers

A

A circle with center at (0,0) has the equation:

x² + y² = r²

If the center shifts off of the origin to (h,k), then the equation is:

(x-h)² + (y-k)² = r²

2007-04-10 02:08:01 · answer #1 · answered by Kathleen K 7 · 1⤊ 0⤋

A). x² + y² = 100

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2007-04-10 02:28:13 · answer #2 · answered by SAMUEL D 7 · 1⤊ 0⤋