Identifying functions
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Examples
Lessons
- Are the following sets of ordered pairs functions?
- Which of the following is a function?
- Using the table of values to answer the questions below:
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X value -5 -3 -1 1 3 Y value 3 1 -1 -2 -3 -
X value -5 -3 -1 1 3 Y value 2 2 -1 -2 -3 -
X value -5 -5 -1 1 3 Y value 2 3 2 3 -3
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Topic Notes
Bring on more grid papers! In this chapter, we're going to study functions. Functions are notations that tell us what the value of y is for every value of x. By carrying out the vertical line test, we are able to find out the relationships of ordered pairs.
Relations: Sets of ordered pairs ( x , y )
Function: For every value of x, there is a value of y. It will need to pass the vertical line test.
One-To-One Function: For every one value of x, there is only one value of y, and vice versa. It will need to pass both vertical and horizontal line test.
Vertical line Test: A vertical line that intersects the graph of the equation only once when moves from across on the x-axis.
Function: For every value of x, there is a value of y. It will need to pass the vertical line test.
One-To-One Function: For every one value of x, there is only one value of y, and vice versa. It will need to pass both vertical and horizontal line test.
Vertical line Test: A vertical line that intersects the graph of the equation only once when moves from across on the x-axis.
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