Name: ________________________
ALGEBRA IB
Date: ____________
Period:______
5-4 NOTES: Writing a Function Rule
Writing a Function Rule from a Table
Examples:
a)
b)
𝒙
𝒇(𝒙)
𝒙
𝒇(𝒙)
0
4
1
1
1
5
2
4
2
6
3
9
3
7
4
16
4
8
5
25
Equation: ________________
Equation: ________________
Questions to ask yourself:
1)
2)
You Try!!
1)
2)
𝒙
𝒇(𝒙)
𝒙
𝒇(𝒙)
0
-2
1
-3
1
-1
2
-6
2
0
3
-9
3
1
4
-12
4
2
5
-15
Equation: ________________
Equation: ________________
Name: ________________________
ALGEBRA IB
Date: ____________
Period:______
Writing an equation from a graph.
To write an equation from a graph, we must first _________________________,
then we can write the equation 
𝒙
𝒇(𝒙)
Equation: ___________________
More Practice…
1.
2.