Writing an equation in general form (circles)

kamo00800 · Jan 6, 2010

(keep in mind, its circle math.. :/)
Write the equation (x+9)²+(y-5)²=12 in general form.

Mark44 · Jan 6, 2010

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 · Jan 6, 2010

okay, but
Ax2 + By2 + Cx + Dy + E = 0
where do i get E...
cause 12 is on the other side of the =

HallsofIvy · Jan 7, 2010

kamo00800 said:

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.

Writing an equation in general form (circles)

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Writing an equation in general form (circles)

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