Identifying functions

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Intros
Lessons
    1. What is a function?
    2. How to do the Vertical Line Test?
  1. Equations VS. Functions
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Examples
Lessons
  1. Are the following sets of ordered pairs functions?
    1. (4,3), (2,6), (-3,4), (-2,5)
    2. (4,5), (4,-3), (2,6), (3,2)
    3. (3,6), (2,6), (5,3), (1,2)
  2. Which of the following is a function?

    Identifying functions
    1. Using the table of values to answer the questions below:
      1. X value -5 -3 -1 1 3
        Y value 3 1 -1 -2 -3
        Express the relations using ordered pairs, mapping notations and determine is it a function
      2. X value -5 -3 -1 1 3
        Y value 2 2 -1 -2 -3
        Express the relations using ordered pairs, mapping notations and determine is it a function
      3. X value -5 -5 -1 1 3
        Y value 2 3 2 3 -3
        Express the relations using ordered pairs, mapping notations and determine is it a function
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    Topic Notes
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    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.