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What is the center and radius of a circle whose equation is 2x squared plus 2y squared plus 2x -6y -9 equals 0?
Wiki User
∙ 7y ago
Equation: 2x^2 +2y^2 +2x -6y -9 = 0
Divide all terms by 2: x^2 +y^2 +x -3y -4.5 =0
Completing the squares: (x+1/2)^2 +(y-3/2)^2 -1/4 -9/4 -4.5 = 0
So: (x+1/2)^2 +(y -3/2)^2 = 7
Centre of circle: (-1/2, 3/2)
Radius of the circle is the square root of 7
Wiki User
∙ 7y ago
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Where is the center of the circle given by the equation x plus 4 squared plus y plus 6 squared equals 49?
(-4,-6)
Where is the center of the circle given by the equation x plus 5 squared plus y minus 3 squared equals 25?
The centre is (-5, 3)
How do you solve x squared plus y squared equals 13?
The equation describes a circle with its centre at the origin and radius = √13. Each and every point on that circle is a solution.
What is the equation for a circle with its center at the origin and a tangent whose equation is y equals 7?
x2 + y2 = 49
Does the equation a squared plus b squared equals c squared classify as a quadratic equation?
no
Where is the center of the circle given by the equation x - 3 squared plus y plus 2 squared equals 9?
The center of the circle given by the equation (x - 3)2 plus (y + 2)2 = 9 is (3,-2).
Where is the center of the circle given by the equation x plus 4 squared plus y plus 6 squared equals 49?
(-4,-6)
How do you graph the equation x squared plus y squared equals 16?
You are describing a circle, with its center at the origin and a radius of 4 (the square root of 16)
Where is the center of the circle given by the equation x plus 5 squared plus y minus 3 squared equals 25?
The centre is (-5, 3)
How do you solve x squared plus y squared equals 13?
The equation describes a circle with its centre at the origin and radius = √13. Each and every point on that circle is a solution.
Where is the center of the circle given by the equation x plus 7 2 plus y - 5 2 equals 16 Enter your answer as an ordered pair?
I think this means (x+7)squared + (y-5)squared =4squared, which represents a circle centred at -7,+5
What is the equation for a circle with its center at the origin and a tangent whose equation is y equals 7?
x2 + y2 = 49
Does the equation a squared plus b squared equals c squared classify as a quadratic equation?
no
Is c equals 2πr the same as c equals πr squared?
No. C = 2*pi*r is the equation representing the circumference of a circle. The area of a circle is equal to pi*(r^2).
What is the approximate area of a circle with a radius of 3 feet?
Area of a circle equals pi (~3.14) multiplied by the radius squared. So to find the area of that circle your equation is (3.14)(3)^2 which equals approximately 27.
What is the center of a circle for the equation 3x2 plus 3y2 - 30x plus 27 equals 0?
56
Where is the center of the circle given by the equation x plus 5 times 2 plus y - 3 times 2 equals 25 in an ordered pair?
Exactly as it's stated, that equation describes a straight line, not a circle. If you take out the phrase "times 2" from both places where it's used and replace it with "squared", then the equation describes a circle, centered at (-5, 3), with a radius of 5.
