Question Detail
Question
For a Hyperbola, defined as a locus of a moving part, what is constant about the distances from two fixed points (foci)?
Correct Answer
Option D is the correct answer.
Detailed Explanation
Page 4 explains: 'Hyperbola: This is defined as the set of points in a plane whose distances from two fixed points, called the foci, in the plane have a constant difference.'
Hint
Unlike an ellipse, the property for a hyperbola involves subtraction.