1. graphing and solving for zeros.notebook October 17, 2012
Recall:
y = x + 3
y­intercept=
x­intercept=
1

2. graphing and solving for zeros.notebook October 17, 2012
f(x) = x2
x y
­2
­1
0
1
2
2

3. graphing and solving for zeros.notebook October 17, 2012
f(x) = x2 ­ 4x + 3
y­intercept=
find the zeros (when y = 0)
x y
0
1
2
3
4
3

4. graphing and solving for zeros.notebook October 17, 2012
f(x) = ­x2 + 4x +5
y­intercept=
find the zeros
x y
0
1
2
3
4
4