Function Notation
Domain and Range
Creating and identifying functions
Key Features of Graphs
100
f(x)= 2x+3
What is f(1)?
5
100
What's the definition of domain and range?
The domain is all of the x values of a function.
Range is all of the y values of a function.
100
Do the set of ordered pairs represent a function?
(1, 4) (2,3) (6,5) (5,6) (-1,4) (0,0)
YES!
100
What is/are the x-intercept(s) of this function?
-4 and 3
200
f(x)=x/4-5
What is f(20)?
0
200
What is the domain and range of the relation below? (1, 9) (2, 4) (5, 4) (13, 7)
Domain is {1, 2, 5, 13} and the range is {4, 7, 9}.
200
Does the graph below represent a function?
YES!
200
When is the function increasing?
(3,oo)
300
f(x)=x^2+x
What is f(2)?
6
300
What is the range of the function graphed below?
Range:
(-oo,4]
300
Does the mapping below represent a function? Why or Why not?
No! x = 1 means y is 3 AND 4
300
Does the function below increase from (4,8)
Yes
400
What is f(-3) of the function
f(x) = 3x + 10x
-39
400
What is the domain of the function graphed below?
Domain: (-infinity, 4]
400
Your family is getting pizza. The pizzas cost $35 and each soda is $2. Write a function for the total cost of the meal depending on how many people get a soda.
c(s)=35+2s
400
Identify the maximum of the graph below. Is it local, absolute, or both?
4 and both
500
d(t) = -3t + 4
If d(a) = -2, what is a?
a = 2
500
What is the domain and range of the graph below?
Domain: [-4,3)
Range: (-5,5)
500
There was an inch of snow on the at midnight and it snows .1 inches per hour all morning. Write a function for how much snow will be on the ground at any time
s(h)=1+.1h
500
What is the domain and range of this function?
Domain:
(-oo,oo)
Range:
[-3, oo)