1. Review and Key has been posted on blog
Day 20 Agenda:
Quiz minutes
Review and Key has been posted on blog

2. Lesson #2: Review of Parabolas
Accel Precalculus
Unit #2: Algebra Topics
Lesson #2: Review of Parabolas
EQ: How do you write the equation of a parabola and how do you use this information to graph parabolas?

3. Circles
Parabolas

5. Patty Paper Activity:
On your patty paper, use a straight-edge to draw a line, d, from one side of the paper to the other.
Place a point, A, anywhere on the patty paper, just not on line d.
Make approximately 15 to 25 tick marks along line d from one end to the other. They do not have to be evenly spaced.
Fold the patty paper so point A lies
on the left most tick mark. Crease the
patty paper, then unfold it.
Repeat this procedure, moving along
line d. Fold, crease, and unfold for
each tick mark.

7. Use the diagram to the right
to identify the significant parts
of the parabola you created on the patty paper.

8. Parabola --- defined in terms of a fixed point, called the focus, and a fixed line, called the directrix
In a parabola, the distance from any point P, on the parabola to the focus F, is equal to the shortest distance from P to the directrix.
That is PF = PD for any point, P, on the parabola.

9. Standard Equation of a Parabola

10. - -

12. Standard Equation of a
Translated Parabola

16. How will this parabola OPEN?

18. ASSIGNMENT:WS Review Parabolas
#9 - 14, 17, 20, 22, 23, 29
#30, 32, 34
#37, 41, 43, 45 (HINT: GRAPH FIRST)