一个ll Algebra II Resources
Example Questions
Example Question #21 :Center And Radius Of Circle Functions
Possible Answers:
Correct answer:
Explanation:
When identifying the center of a circle, take the opposite sign of each value connected to x and y.
Example Question #491 :Functions And Graphs
What is the center and radius of the following equation, respectively?
Possible Answers:
Correct answer:
Explanation:
The equation given represents a circle.
represents the center, andis the radius.
The center is at:
Set up an equation to solve the radius.
The radius is:
The answer is:
Example Question #23 :Center And Radius Of Circle Functions
Which of the following represents the formula of a circle with a radius ofcentered at?
Possible Answers:
Correct answer:
Explanation:
Write the standard form for a circle.
The circle is centered at:
The radius is:
Substitute all the known values into the formula.
Simplify this equation.
The answer is:
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一个ll Algebra II Resources
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