The Vocab
Are You Having Fun(ction)?
Domain and Range
What's my function?
100
This word is used to describe the set of all inputs for a function.
Domain
100
No, it does not pass the vertical line test.
100
Find the DOMAIN:
{(-2, 4), (3, 2), (2, 10)}
What is {-2, 2, 3)?
100
f(4) if f(x)=x-5
f(x) = -1
200
This word is used to describe the set of all outputs of a function.
Range
200
Yes, it passes the vertical line test.
200
Find the RANGE:
{(-2, 4), (3, 2), (2, 10)}
What is {2, 4, 10}?
200
f(-3) if f(x)=2x +1
f(x) = -5
300
This word describes a relation that pairs each x value with only one y value.
Function
300
Is this a function?
No. There are two x's at 8.
300
Find the DOMAIN?
x y
1 2
2 5
6 2
2 9
5 1
(1,2,5,6)
300
f(-1) if f(x) = 3x+1
f(x) = -2
400
This type of graph is made up of distinct points.
Discrete graph
400
Does the following table represent a function?
x y
1 2
2 5
6 2
2 9
5 1
No, the x value of 2 repeats.
400
Find the RANGE?
x y
1 2
2 5
6 2
2 9
5 1
(1,2,5,9)
400
f(0) if f(x)=3/5x+2
f(x) = 2
500
This type of graph is made up of lines and curves.
Continuous graph
500
Is the following a function?
(1, 0), (2, 2), (3, 4)?
Yes, it is a function.
500
See board
No, the x value of zero occurs twice.
500
f(-6) if f(x) = -1/2x+7
f(x) = 10