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  1. Functions | Algebra (all content) | Math | Khan Academy

    This topic covers: - Evaluating functions - Domain & range of functions - Graphical features of functions - Average rate of change of functions - Function combination and composition - …

  2. Functions | Algebra 1 | Math | Khan Academy

    About this unit A function is like a machine that takes an input and gives an output. Let's explore how we can graph, analyze, and create different types of functions. Unit guides are here! …

  3. Functions | College Algebra | Math | Khan Academy

    A function is like a machine that takes an input and gives an output. Let's explore how we can graph, analyze, and create different types of functions.

  4. Rational functions (video) - Khan Academy

    What are rational functions? How do we plot them? What is their domain and range? Let's find out. We break down the definition of the function given in set-builder form and plot the graph …

  5. What is a function? (video) | Functions | Khan Academy

    Functions assign a single output for each of their inputs. In this video, we see examples of various kinds of functions.

  6. Linear equations, functions, & graphs | Khan Academy

    Test your understanding of Linear equations, functions, & graphs with these 22 questions.

  7. Functions | Algebra 1 (Illustrative Mathematics-aligned) | Khan …

    Using function notation to describe rules (part 1) Learn Worked example: Evaluating functions from equation

  8. Composite and inverse functions - Math | Khan Academy

    We can compose functions by making the output of one function the input of another one. This simple-yet-rich idea opens up a world of fascinating applications. Inverse functions undo each …

  9. Rational functions | Precalculus | Math | Khan Academy

    Divide one polynomial by another, and what do you get? A rational function! We'll analyze the family of rational functions, and we'll see some examples of how they can be useful in …

  10. Cell structure and function | AP®︎/College Biology - Khan Academy

    Explore the structures and functions of major eukaryotic cell organelles. Understand how the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, chloroplasts, and …