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What is the center of this hyperbola -4x2 plus 9y2 plus 16x-18y plus 29 equals 0?
Wiki User
∙ 13y ago
-4x2 + 9y2 + 16x - 18y +29 = 0 (I hope this is what you meant)
9y2 - 18y - (4x2 -16x) +29 = 0 (group together the x's and y's, and make the x2 term positive.
9(y2 - 2y) - 4(x2 - 4x) +29 = 0 (remove common factors)
9(y - 1)2 - 1 - 4(x - 2)2 - 4 + 29 = 0 (complete the squares)
9(y - 1)2 - 4(x - 2)2 = -25 (move constants to right-hand side)
[(y - 1)2] - 4[(x - 2)2]/9 = -25/9 (divide by coefficient in front of x or y bracket, in this case 9)
[(y - 1)2]/4 - [(x - 2)2]/9 = -25/36 (divide by coefficient in front of other bracket, in this case 4)
As you can see, we now have our equation in standard form. Our center points satisfy [(x - 2 = 0) , (y - 1 = 0)], thus our center is (2,1).
Wiki User
∙ 13y ago
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