Determining if Equations are Functions

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Taught by mrbrianmclogan
  • Currently 5.0/5 Stars.
6768 views | 1 rating
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Lesson Summary:

This lesson teaches how to determine if an equation represents a function relationship. The criteria to be met includes everything in 'x' being mapped to a 'y', and the 'x' values should have a unique corresponding 'y' value. The first step is to isolate 'y' by solving for it, then taking the square root. The square root can result in 2 possible values for 'y,' which means that the input now has multiple possible values, making it not a function relationship between 'y' and 'x.'

Lesson Description:

Determine if the equation represents a function

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Questions answered by this video:
  • How can I tell if an equation is a function or not?
  • Staff Review

    • Currently 5.0/5 Stars.
    This video shows an example of one equation. The instructor demonstrates why the equation does not represent a function.