1. Bell ringer 1. What is standard form of a quadratic?
2. What is the graph of a quadratic function called?
3. How do corrective lenses work?
Bell ringer

2. Focus and directrix
Friday, October 2, 2015

3. Equation of a parabola based on focus and directrix
The parabola is defined as the locus of a point which moves so that it is always the same distance from a fixed point called the focus and a given line called the directrix.
Equation of a parabola based on focus and directrix

4. Equation of a parabola based on focus and directrix
The directrix is the line y = k – p.
The focal distance is │p│which is the same distance from the vertex to the focus and from the vertex to the directrix.
Equation of a parabola based on focus and directrix

8. Classwork – Parabola Worksheet
Homework – Write the equations for the parabolas given focus and directrix.
Practice