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What is Function Notation?

Definition: f(x)

Summary

  1. The symbol 'f(x)' is read as "f of x", and represents function notation
  2. 'y=2x-2' is the equation of a line and is also a function
  3. Since 'y=2x-2' is a function, we can substitute 'f(x)' for the variable 'y'
  4. So 'f(x)=2x-2' is the function notation for 'y=2x-2'

Notes

    1. Think "function" when you see 'f(x)'
    1. Think "function" when you see 'f(x)'
    2. So if an equation is in slope-intercept form and is a function, the symbol 'f(x)' is interchangeable with the variable 'y'
    1. 'y=2x-2' can be graphed as a line on a graph
    2. Let's incorporate the symbol 'f(x)' into this equation
    1. Since 'y=2x-2' is a function, we can substitute 'f(x)' for the variable 'y'
    1. Since 'y=2x-2' is a function, we can substitute 'f(x)' for the variable 'y'
    2. So if an equation is in slope-intercept form and is a function, the symbol 'f(x)' is interchangeable with the variable 'y'
    1. Since 'y=2x-2' is a function, we can substitute 'f(x)' for the variable 'y'
    2. So if an equation is in slope-intercept form and is a function, the symbol 'f(x)' is interchangeable with the variable 'y'
    3. So 'f(x)=2x-2' is the function notation for 'y=2x-2'
    1. So think "function" when you see 'f(x)'