Function from Graph
Identify the x and y intercepts
Is It a Function?
Relations/Domain and Range
Vocabulary
100
What is the function?
y = 1/2 x + 2
100
y = 2x -6
x-intercept: x = 3
y-intercept: y = -6
100
The name of the test used to determine whether a graph is a function or not is called the ____________ _______ test.
What is vertical line?
100
The domain of the relation {(1,0), (-2, 3), (3, 4)} would be:
What is {1, -2, 3}?
100
The name of the horizontal axis is called______________.
What is the x-axis?
200
Name this function:
y = -2/3 x + 5
200
Intercepts for:
x + 3y = 12
x-intercept: x=12
y-intercept: y=4
200
A function is a special type of relation where every ___ value has exactly one output, or ___ value.
What is x, y?
200
Write the range of this relation:
{(8,7), (-6, 3), (2, 0)}
What is {7, 3, 0}?
200
Another name for the coordinates (0,0) would be the _______________.
What is the origin?
300
Name this function:
y = x
300
Intercepts:
y = -3x + 6
x-intercept: x=2
y-intercept: y=6
300
Determine if the following relation is a function. Explain why or why not. {(9, 0), (3, 0), (2, 2), (-3, -4)}
What is YES? It is a function since each x value has only one y value.
300
Name three ways to show a relation.
What is a set of ordered pairs, graph, and table?
300
A set of ordered pairs is called a _______________.
What is a relation?
400
Function?
y = x - 2
400
Intercepts:
y = -2x -6
x-intercept: x= -3
y-intercept: y= -6
400
Is the following graph a function?
Yes. Vertical line test does not go through more than one point.
400
Show the following {(0, 4), (-7, 5), (8, 3), (-7, 2)} as a table.
Is it a function?
x | y No -7 has 2 y values
0 | 4
-7 | 5
8 | 3
-7 | 2
400
The set of all of the x-values in a relation is called the__________________.
domain
500
Function?
y = 3x - 1
500
Intercepts:
y = -2/3 x + 2
x-intercept: x = 3 -2/3 x = -2
x = -2(-3/2) = 3
y-intercept: y = 2
500
Are either of the following two graphs NOT function a function?
The 2nd one is not - fails the vertical line check.
500
Show the following {(6, 4), (-3, -2), (6, 0), (-4, 4)} as a table and a graph. Write the domain and range.
Is it a function?
See whiteboards. D: {(6, -3, -4)} R: {(4, -2, 0)}
Not a function 6 is paired with 4 and 0
500
Write an example of an ordered pair. Circle the first number. This number is called the________________.
What is the x coordinate?