Circle Equations in Standard Form
Circle Equations in Standard Form
Observe how changing the center coordinates and radius in the standard form of a circle's equation affects its graph.
Putting It All Together
Answer these open ended questions on your own or with others to form deeper math connections.
Open-ended question 1
Write an equation to describe the circle with center at (0,0) and a radius of 2. How does the equation simplify when the center is the origin?
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Open-ended question 2
State the center and radius of a circle defined by the equation .
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Open-ended question 3
Chris says that is not the equation of a circle because there should be minus signs instead of plus signs inside the parentheses. Do you agree with this statement or not? Why?
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Prerequisite Resources
