Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
Which of the following is the equation for a circle?
Which of the following is the equation for a circle?
- ax² + bx + c = 0
- x² + y² = r² (correct)
- y = mx + b
- y = mx
What does the equation x² + y² = r² represent?
What does the equation x² + y² = r² represent?
- A circle (correct)
- A parabola
- A line
- An ellipse
Which of the following equations represents a circle with center at (3, -2) and radius 5?
Which of the following equations represents a circle with center at (3, -2) and radius 5?
- (x + 3)² + (y - 2)² = 5²
- (x - 3)² + (y + 2)² = 25
- (x + 3)² + (y - 2)² = 25
- (x - 3)² + (y + 2)² = 5² (correct)
다음 중 원의 방정식으로 올바른 것은 무엇입니까?
다음 중 원의 방정식으로 올바른 것은 무엇입니까?
Signup and view all the answers
원의 방정식은 무엇을 나타냅니까?
원의 방정식은 무엇을 나타냅니까?
Signup and view all the answers
원의 방정식에서 r은 무엇을 의미합니까?
원의 방정식에서 r은 무엇을 의미합니까?
Signup and view all the answers
Flashcards are hidden until you start studying
Study Notes
Circle Equation
- The equation for a circle is x² + y² = r².
- This equation represents a circle centered at the origin (0, 0) with radius r.
Circle with Center (a, b) and Radius r
- The equation (x - a)² + (y - b)² = r² represents a circle with center at (a, b) and radius r.
- For a circle with center at (3, -2) and radius 5, the equation is (x - 3)² + (y + 2)² = 5².
Variable 'r' in Circle Equation
- In the circle equation, r represents the radius of the circle.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
