A110­2QuadFunctions.notebook
March 24, 2016
Algebra 1
Ch.10 Notes Page 60
P60 10­2 Quadratic Functions
Sep 2­8:31 AM
Finding the Line of Symmetery
2
ax + bx + c
x = ­b
2a
2
y = 2x + 4x + 2
y = ­3x2 + 6x + 5
Apr 21­8:42 AM
1
A110­2QuadFunctions.notebook
March 24, 2016
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
A110­2QuadFunctions.notebook
March 24, 2016
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
A110­2QuadFunctions.notebook
March 24, 2016
Graphing Quadratic Inequalities
y > x2 + 2x + 1
y < x2 ­ 4x ­ 4
Apr 30­8:39 AM
4