Precalculus » A. Functions » A.4. Functions

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• Unit Challenge

Determine whether the relation is a function

• Overview
• Determine whether a relation is a function using sets of ordered pairs

Evaluating Functions

• Overview
• Evaluate the function using function notation
• Evaluate a piecewise function
• Finding the difference quotient

Finding X-Values and the Domain of Functions

• Overview
• Find x-values for which the function is zero
• Find x-values for which two functions are equal
• Find the domain of the function given an equation

Analyzing Graphs of Functions

• Overview
• Finding the Domain and Range of a Function Using a Graph
• Using the Vertical Line Test to decide if the Relation is a Function
• Finding the Zeros of a Function Algebraically
• Determining over Which Intervals the Function is Increasing, Decreasing, or Constant
• Finding the Relative Minimum and Relative Maximum of a Function
• Finding the Intervals for Which the Function is Positive
• Finding the Average Rate of Change of a Function
• Finding the Average Speed of an Object
• Determining if Functions are Even, Odd, or Neither