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Which graph represents a circle with equation x2 + y2 = 9
4 months ago
Q:
which graph represents a circle with equation x2 + y2 = 9
Accepted Solution
A:
The basic form of the equation of a circle is:
x^2+y^2=r^2
where r^2 is the radius squared.
Looking at your equation, x^2+y^2=9, the radius is 3 (sqrt of 9 is 3)
Therefore, the graph B would be correct since the radius of the circle at all points is 3.
Hope I helped :)