SOLUTION: 1] What is the equation of a circle whose center is not the origin? 2] What is the equation of a circle whose center is the origin? 3] What is a two-point equation?

Algebra ->  Formulas -> SOLUTION: 1] What is the equation of a circle whose center is not the origin? 2] What is the equation of a circle whose center is the origin? 3] What is a two-point equation?      Log On


   



Question 426478: 1] What is the equation of a circle whose center is not the origin?
2] What is the equation of a circle whose center is the origin?
3] What is a two-point equation?

Answer by Gogonati(855) About Me  (Show Source):
You can put this solution on YOUR website!
Answer: The standard equation of the circle centered at (h,k) is given:
%28x-h%29%5E2%2B%28y-k%29%5E2=r%5E2 where r is the radius and (h,k) the center.
If the center is the origin then the equation will be:
x%5E2%2By%5E2=r%5E2 where r is the radius.
If a line pas through the points (X1,Y1) and (X2,Y2),its equation is:
%28Y-Y1%29%2F%28Y2-Y1%29=%28X-X1%29%2F%28X2-X1%29
Where: m=(Y2-Y1)/(X2-X1) is the slope of the line.