Quadratic Equations
Song By: Lillian
X is negative b
Plus or minus squared root
b square minus 4 ac
all over two a (2a)
----------------------------------------------------------
X^2 - 5X - 7
Y- Intercept (0, -7)
Axis of Symmetry X= 5/2
-b +/- squareroot b^2 - 4ac / 2
5+7.3 /2
5 - 7.3 /2
Zeroes (6.15,0) (-1.15,0)
Vertex Y=(5/2)^2 - 25/2 -7
(2.5, -13.25)
(-1.15,0) (6.15,0) (0,-7)
X=2.5 (2.5, -13.25)
Graph should have a positive curve
Homework : P. 262 # 4
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