A few days ago
find the center and raduis of the circle..STUDYING FORTEST?
x^2 + y^2 =25
and
(x +2)^2 +y^2=16
IM SOO LOST DONT JUST GIMME AN ANSWER..
THANX!!
Top 2 Answers
A few days ago
Favorite Answer
Here’s a link to help you:
http://www.mathwarehouse.com/geometry/circle/equation-of-a-circle.php
This link shows you a point-origin solution to any problem. You can move the origin and you can move a point on the circle in order to change the equation. This should help you analyze the formula.
In question 1, your origin will be zero and your radius will be 5.
In question 2, your origin will be -2,0 and your radius will be 4.
0
A few days ago
Standard form for circles is (x-a)² + (y-b)² = r² where (a,b) is the center of the circle. So in your first problem
x²+y²=25
(x-0² + (y-0)²=5²
so the center is at (0,0) and the radius is 5
In the second problem you have
(x- -2)²+(y-0)²=4²
so the center is at (-2,0) and the radius is 4
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