Domain and Range
Is it a Function?
Evaluating Functions
Even More FUNctions
f(x)=0
(Zeros)
(Zeros)
100
List the domain and range of the following ordered pairs:
(-5,2),(-3,1),(0,5),(2,6),(4,3)
Domain={-5,-3,0,2,4}
Range={2,1,5,6,3}
100
State whether or not the relation is a function:
x 2 4 6 8 10
y -4 -3 -2 -1 0
Yes (There are no repeated x-values)
100
Evaluate the expression f(0)+f(1)
f(x)=2x
f(0)+f(1)=2
100
What is f(3)?
f(x)=5x+2
f(3)=17
100
This is where you find zeroes on a graph
On the x-axis, where f(x)=0 (or y=0)
200
Identify the domain and range of this graph:
Domain= All Real Numbers
Range= All Real Numbers
200
Is the following graph a function:
Yes (It passes the vertical line test)
200
Evaluate the function f(x), at f(2)
f(2)=-3
200
Evaluate f(9)
f(t)=2t2-t+5
f(9)=158
200
For which x value(s) does g(x)=0?
g(x)=4x+12
x=-3
300
Find the domain and range of this graph:
Domain: All real numbers
Range: y≥-3
300
Is the following graph a function?
No (It does not pass the vertical line test)
300
Given the function g(x) = x2, find the range for the domain {-4, -2, 3, 5}.
Range={4,9,16,25}
300
For which value of x does f(x)=10
f(x)=3x-20
x=10
300
Where are the zeroes of this function?
x={-3,1}
400
Illustrate the domain and range as a "map":
(-5,2),(-3,1),(0,5),(2,6),(4,3)
On the board
400
State whether or not the relation is a function:
x -10 -4 -2 0 2 4 -4
y -4 -3 -2 -10 -4 3 1
No (Two y-values for a single x-value)
400
Evaluate the function at f(0):
Not a function
400
If h(x) = |5x – 17|, find h(3).
h(3)=2
400
Identify the zeroes of the function:
x={-4,0,5}
500
List the domain and range of the plot:
Domain={-1,0,1,3}
Range={-2,0,1,3}
500
Is this graph a function?
Yes
500
Which x value will result in f(x)=3 if
f(x)=6x+21
x=-3
500
If g (x) = 2x – 1, find g(4)–g(-3).
g(4)-g(-3)=0
500
Find the zeroes of the function:
f(x)=3x+27-2x-12
x=-15