A110­2QuadFunctionsFall14.notebook
October 23, 2014
Algebra 1
Ch.10 Notes Page 56
P56 10­2 Quadratic Functions
Sep 2­8:31 AM
1
A110­2QuadFunctionsFall14.notebook
October 23, 2014
Finding the Line of Symmetery
2
ax + bx + c
x = ­b
2a
2
y = 2x + 4x + 2
2
y = ­3x + 6x + 5
Apr 21­8:42 AM
2
A110­2QuadFunctionsFall14.notebook
October 23, 2014
Finding a Vertex (Max/Min)
2
y = 2x + 4x + 2
Use Line of Symmetry and Substitution
Is Vertex a Max or Min?
May 5­7:39 AM
3
A110­2QuadFunctionsFall14.notebook
October 23, 2014
Properties of Parabolas
Standard Form:
y = ax2 + bx + c
2
y = 2x + 8x + 4
a > 0 Opens Up
a < 0 Opens Down
***c = y­intercept (0, c)
Line of Symmetry/Vertex
x = ­b and Substitution
2a
May 5­7:41 AM
4
A110­2QuadFunctionsFall14.notebook
October 23, 2014
Sketching the Parabola
Up/Down
y = 3x2 + 12x + 8
y­Intercept
Line of Symm
Vertex
May 5­7:40 AM
5
A110­2QuadFunctionsFall14.notebook
October 23, 2014
The equation h = ­16t2 + 72t + 520 gives the fireworks height h in feet at time t in seconds. Find the maximum height of the firework and the time that it gets to that height.
(Find the Vertex!!!)
Apr 30­8:38 AM
6
A110­2QuadFunctionsFall14.notebook
October 23, 2014
HW #65
10­1 P553 #1­3,10,11,14­19,21­26
10­2 P560 #1­14
Please put your name and class period at the top of the homework.
Also include the homework number.
Nov 19­2:26 PM
7
A110­2QuadFunctionsFall14.notebook
October 23, 2014
Graphing Quadratic Inequalities
2
2
y > x + 2x + 1
y < x ­ 4x ­ 4
Apr 30­8:39 AM
8