also can someone state center radius
2007-12-10 01:40:36 · 3 answers · asked by referencearea 2 in Science & Mathematics ➔ Mathematics
x^2 + y^2 - 6x + 9y = 1
(x - 3)^2 + (y + 9/2)^2 -9 - 81/4 = 1
(x - 3)^2 + (y + 9/2)^2 = 4+36+81 /4
(x - 3)^2 + (y + 9/2)^2 = 121/4
(x - 3)^2 + (y + 9/2)^2 = (11/2)^2
radius = 11/2 units
2007-12-10 01:52:32 · answer #1 · answered by KDFC 3 · 0⤊ 0⤋
(x² - 6x + 9) + (y² + 9y + 81/4) = 1 + 9 + 81/4
(x - 3)² + (y + 9/2)² = 121/4
(x - 3)² + (y + 9/2)² = (11/2)²
Centre (3 , - 9,2)
Radius = 11/2
2007-12-10 10:11:27 · answer #2 · answered by Como 7 · 2⤊ 0⤋
x^2-6x+y^2+9y=1
x^2-6x+(6/2)^2+y^2+9y+(9/2)^2= 1+(6/2)^2+(9/2)^2
(x-3)^2+(y+4.5)^2=30.25
SO, center is (3,-4.5), and radius is squareroot(30.25)
2007-12-10 09:56:04 · answer #3 · answered by yljacktt 5 · 0⤊ 0⤋