A110­2QuadFunctionsFall15.notebook
April 29, 2015
Algebra 1
Ch.10 Notes Page 57
P57 10­2 Quadratic Functions
Sep 2­8:31 AM
Finding the Line of Symmetery
ax2 + bx + c
x = ­b
2a
y = 2x2 + 4x + 2
y = ­3x2 + 6x + 5
Apr 21­8:42 AM
1
A110­2QuadFunctionsFall15.notebook
April 29, 2015
Finding a Vertex (Max/Min)
y = 2x2 + 4x + 2
Use Line of Symmetry and Substitution
Is Vertex a Max or Min?
May 5­7:39 AM
Properties of Parabolas
Standard Form:
y = ax2 + bx + c
y = 2x2 + 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
2
A110­2QuadFunctionsFall15.notebook
April 29, 2015
Sketching the Parabola
Up/Down
y = 3x2 + 12x + 8
y­Intercept
Line of Symm
Vertex
May 5­7:40 AM
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
3
A110­2QuadFunctionsFall15.notebook
April 29, 2015
Graphing Quadratic Inequalities
y > x2 + 2x + 1
y < x2 ­ 4x ­ 4
Apr 30­8:39 AM
HW #69
10­2 P560 #1­14,16,23­25
Please put your name and class period at the top of the homework.
Also include the homework number.
Nov 19­2:26 PM
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