1. Dr. Fowler  AFM  Unit 2-4
Quadratic Models

2. Video: Parabolas in Real Life
CLICK Video Link below to open in YouTube. Take Notes.

3. A farmer has 1600 yards of fence to enclose a rectangular field
A farmer has 1600 yards of fence to enclose a rectangular field. What are the dimensions of the rectangle that encloses the most area?
The farmer should make the rectangle 400 yards by 400 yards to enclose the most area.

4. Find the maximum height of the projectile.

5. (b) How far from the base of the cliff will the projectile strike the water?
Solution cannot be negative so the projectile will hit the water about 5458 feet from the base of the cliff.

7. Click Video to watch – Do NOT need to know all of this right now, but if you are familiar with the graphing calculator – this should help you pick up on a lot of great features.

8. Using a Calculator to find the Line of Best Fit:
X = 20, 30, 40, 60, 80, 100, 110
Y = 30, 50, 65, 75, 72, 50, 25
Setup Calculator
Press 2nd, Catalog, Diagnostics ON, Enter, Enter
Step 1 – Press STAT, Edit
Put X Values for L1, then Put Y Values for L2
Step 2 – Press STAT again, right arrow to CALC, QuadReg
QuadReg …… Press L1, comma, L2, enter
(this tells Calculator to use List 1 & 2)
a =
b =
c = Quadratic Best Fit > y =

9. Excellent Job !!! Well Done