Mathematics
Mathematics
Problem
a. (i) For the parabola , state whether its axis is horizontal or vertical, and mention the direction in which it opens. b. (ii) Find the coordinates of its focus.Intuitive explanation
The key to parabolas is recognizing their standard form: when is isolated (not ), the axis is vertical, and the parabola opens in the direction the variable on the right-hand side points. By comparing to the standard form , you can extract the focal parameter , which tells you both how far the focus sits from the vertex and confirms the opening direction.
Intuitive explanation
The key to parabolas is recognizing their standard form: when is isolated (not ), the axis is vertical, and the parabola opens in the direction the variable on the right-hand side points. By comparing to the standard form , you can extract the focal parameter , which tells you both how far the focus sits from the vertex and confirms the opening direction.