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Introduction to Functions

Connect inputs to outputs with functions.

18 Lessons240 Exercises

Finding the Rule

Word Functions

Time Functions

Repeating Outputs

Deducing the Rule

Level Review

Numeric Rules

Writing Rules

Conditional Rules

Deducing Numeric Rules

Level Review

Graphing Linear Functions

Graphing Squared Functions

Graphing Absolute Value

Graphing Without an Equation

Interpreting Graphed Functions

Level Review

Discrete Functions

Depreciation Functions

Multi-Part Functions

Periodic Functions

Level Review

Up next

Quadratics

Learn to work fluently with quadratic expressions and equations.

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Course description

We'll start by looking at a wide range of functions applied to numbers, strings of text and real world objects. We'll then explore properties of a wide range of numeric functions in the coordinate plane.


Topics covered

  • Calculating the output of a function.
  • Deducing a function rule from inputs and outputs.
  • Function notation.
  • Functions on the coordinate plane.
  • Discrete and continuous functions.
  • Interpreting function graphs.
  • Piecewise functions.
  • Domain and range.

Prerequisites and next steps

Before starting this course you should have familiarity with the coordinate plane, basic algebra and linear relationships of the form y=mx + c.