Evaluate
Is It a Function?
Relations/Domain and Range
Vocabulary
100
Evaluate using h(-3)
h(x)=x^2+9
h(-3) = 18
100
The name of the test used to determine whether a graph is a function or not is called the ____________ _______ test.
vertical line test
100
The domain of the relation {(1,0), (-2, 3), (3, 4)} would be:
D = {1, -2, 3}
100
The name of the horizontal axis is called______________.
The x-axis
200
Evaluate using h(15)
h(x)=x^2+9
h(15) = 234
200
A function is a special type of relation where every ___ value has exactly one output, or ___ value.
input value (x value)
y value
200
Write the range of this relation: {(8,7), (-6, 3), (2, 0)}
R = {7, 3, 0}
200
Another name for the coordinates (0,0) would be the _______________.
(0,0) is the origin
300
Evaluate using g(x)=36
g(x)=-3x+18
x = -6
300
Determine if the following relation is a function. Show your work using either a graph or an input/output table. {(9, 0), (3, 0), (2, 2), (-3, -4)}
It is a function!
300
Name three ways to show a relation.
A relation can be shown with a set of ordered pairs, graph, words, etc.
300
A set of ordered pairs is called a _______________.
A relation!
400
Evaluate f(4)
f(4) = {-2,2}
400
Determine if the graph is a function
No, not a function!
400
Show the relation {(0, 4), (-7, 5), (8, 3), (-7, 2)} as a table.
See white boards.
400
Give an example of an ordered pair and graph it.
Answers will vary.
500
Evaluate f(x)=10
f(1) = 10
500
Determine if the graph is a function
Yes! It's a function
500
Show the relation {(6, 4), (-3, -2), (6, 0), (-4, 4)} as a table and a graph. Write the domain and range.
See whiteboards. D: {(6, -3, -4)} R: {(4, -2, 0)}
500
Write an example of an ordered pair. Circle the first number. This number is called the________________.
the x-coordinate