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Module 20-The circle

(___)^2+(y-k)=r^2 Whats missing? x-h
The center of a circle is what from the formula? (h,k)
(x-h)^2+(y-k)^2=r^2 is in what form? Standard
The radius does what when put into standard form? Squareroot
(x-h)^2+(___)^2=r^2 whats missing? y-k
how would you write x^2+y^2=4 into standard form? (x-0)^2+(y-k)^2=r^2
How do you find the equation of a circle with center (-7,3) and a radius of 10. (x+7)^2+(y-3)^2=100
What is a circle? a set of all points in a plane that are the same distance from a fixed point called the center.
What is the distance from the center? The radius
What does (x,y) represent? any point on the circle
Created by: steena3291