Answer: (1, 2).
- A (1, 2)
- B (−1, −2)
- C (2, 1)
- D (0, 0)
Correct answer: A. (1, 2)
Explanation: The centre is read directly as (1, 2).
All four conics form a single family distinguished only by eccentricity: a circle is the most "closed" (e=0), an ellipse is an elongated closed curve, a parabola is the borderline open curve (e=1), and a hyperbola has two separate open branches (e>1).
Concept context
Study circles, parabolas, ellipses, and hyperbolas as curves formed by intersecting a plane with a double cone, with their standard equations and key properties.