What is y=9-x^2-y^2 ?

The solution to y=9-x^2-y^2 is Circle with (a,b)=(0,-1/2),r=(sqrt(37))/2

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y=9-x^2-y^2

y = 9 - x^{2} - y^{2}

(a, b) = (0, - \frac{1}{2}), r = \frac{37}{2}

Solution steps

y = 9 - x^{2} - y^{2}

Rewrite

y = 9 - x^{2} - y^{2}

in the form of the standard circle equation

(x - 0)^{2} + (y - (- \frac{1}{2}))^{2} = (\frac{37}{2})^{2}

Therefore the circle properties are:

(a, b) = (0, - \frac{1}{2}), r = \frac{37}{2}

x^{2} + y^{2} + 8 x - 6 y + 5 = 0

x^{2} - 2 x + y^{2} + 2 y = 102

3. 6^{2} = (x + 0.001)^{2} + (y + 0.3)^{2}

x^{2} + y^{2} \geq 25

(x - 512)^{2} + y^{2} = 256

What is y=9-x^2-y^2 ?
The solution to y=9-x^2-y^2 is Circle with (a,b)=(0,-1/2),r=(sqrt(37))/2