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Writing an equation in general form (circles)

by kamo00800
Tags: circles, equation, form, writing
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kamo00800
#1
Jan6-10, 03:00 PM
P: 2
(keep in mind, its circle math.. :/)
Write the equation (x+9)2+(y-5)2=12 in general form.
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Mark44
#2
Jan6-10, 03:19 PM
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If my memory is correct, general form is just Ax2 + By2 + Cx + Dy + E = 0. In this case, A and B are 1. Just expand what you have to write your equation in general form.
kamo00800
#3
Jan6-10, 03:21 PM
P: 2
okay, but
Ax2 + By2 + Cx + Dy + E = 0
where do i get E...
cause 12 is on the other side of the =

HallsofIvy
#4
Jan7-10, 05:06 AM
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Writing an equation in general form (circles)

Quote Quote by kamo00800 View Post
okay, but
Ax2 + By2 + Cx + Dy + E = 0
where do i get E...
cause 12 is on the other side of the =
Then subtract 12 from both sides of the equation.


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