1. Algebra 1
Functions: Evaluation, Domain and Range, Sequences
Function Notation: ___ is the input
___ is the name This does NOT
of the function mean f _______ x
f(x)
Evaluate the function at and .
Evaluate the function at and .
Domain:
If a function is ____________________________ for any input, we say that number is not in
the ___________________________ of the function.
What are the domains and ranges of the functions?
Domain:
Range:
Scatter plot Domain:
Range:
Domain:
Range:

2. Sequences
Domain = Set of _______________________________ numbers ( )
5, 10, 15, 20, ________
This is called an ___________________________________ sequence.
“Arithmetic” sequences add the ________________ number every time to the previous
number.
How could we write that as an equation?
Can you write an arithmetic sequence that starts with -2 and adds 3 each time?
2, 4, 8, 16, ________
This is called a ____________________________________ sequence.
“Geometric” sequences _____________________________ the same number to the one
before.
How could we write that as an equation?
Can you write a geometric sequence that starts with ¼ and multiplies by 2 each
time?

3. Algebra 1 Name: ________________________________
Functions 3 Homework
1. Evaluate the function for and .
2. Evaluate the function for and .
3. What are the next four terms of the arithmetic sequence 21, 18, 15, 12, …?
4. What are the next four terms of the arithmetic sequence if
?
5. What are the next four terms of the geometric sequence 3, 6, 12, 24, …?
6. What are the next two terms of the geometric sequence 8, 4, 2, 1, ½, …?
7. a) Write an equation for a geometric sequence that starts with 16 and multiplies
by -¼ each time.
b) What are the next four terms of the sequence?