Functions
Function Notation
Evaluating Functions
Domain and Range
100
True or False: All functions increase and/or decrease
False
100
Write y = 5x - 10 in function notation.
f(x)=5x-10
100
Evaluate f(x) = 3x +2 for f(2) and express your answer in function notation.
f(2) = 8
100
Define domain and range of a function
The domain is the set of input (x) values and the range is the set of output (y) values
200
If you are given a table, how do you know if it is a function?
Every input only has one output
200
In the function f(a) = 20a - 10
What is the input?
What is the name of the function?
input: a
name: f
200
Evaluate b(m) = m2 - 3 for b(2) and express your answer in function notation.
b(2) = 1
200
What is the domain and range of the function below?
Domain:
-3<x<=1
Range:
-4<=y<=0
300
Do these ordered pairs represent a function?
{(2, 2), (3, 2), (4, 3), (5, 6)}
Yes
300
If f(x) = 3x and g(x) = 2x, what is f(2) * g(3)?
f(2) * g(3) = 36
300
Evaluate h(x) = 3x - 4 for h(2) and express your answer in function notation.
h(2) = 5
300
Express the domain and range of the discrete function below. 
Domain: {-6, -1, 1, 5, 7}
Range: {-4, -1, 2, 4}
400
Does the equation below represent a function? Why or why not?
f(x) = 2x - 3
Yes. Linear functions pass the vertical line test.
400
Ms. Ferrao charges her tutoring clients $50 per hour. Use function notation to express how much money she makes tutoring for 5 hours each week.
F(5) = 250
400
Given g(x) = x2 + 2x + 1
Find g(-2)
g(-2) = 1
400
Express the domain and range in interval notation:
D:
{3}
R:
-oo<y<oo