Question

the circle contains (-2, 16) and has x-intercepts -2 and -32.
Write an equation of the circle described

Answer 1

I haven't finished it yet, but I found this:
http://www.qc.edu.hk/math/Advanced%20Level/circle%20given%203%20points.htm
Take a look and see if it helps you out. :)

Answer 2

I am currently trying method 1 and it is working so far.

Answer 3

How is it coming for you?

Answer 4

@Sammysamsam?

Answer 5

Still working on it, did you get anything? @JoannaBlackwelder

Answer 6

Yup, I got it using the first method.

Answer 7

It actually works out pretty nicely using systems of equations with x intercepts.

Answer 8

okay, what did you get just to make sure I get the same

Answer 9

:) You tell me and I'll let you know if I got the same...

Answer 10

Welcome to Open Study!

Answer 11

Helpers aren't supposed to give answers, but help guide the asker to the answer.

Answer 12

I kinda dont understand where they are with using the D, E @JoannaBlackwelder

Answer 13

Those are the constants of the general form of the equation of a circle.

Answer 14

Method 2 uses the center and radius form of the circle if you are more familiar with that.

Answer 15

yeah but they confuse me i dont get how it relates to my problem
@JoannaBlackwelder

Answer 16

The general form of the equation of a circle is \[x^{2}+y ^{2}+Dx+Ey+F=0\]

Answer 17

D, E, and F are the constants and x and y are the variables.

Answer 18

Oh the second method is more understandable @joannablackwelder

Answer 19

Great! Whichever way works for you. They should all come to the same answer, just in different forms.